Name: synthesis of high purity nonsymmetric dialkylphosphinic acid extractants
Uploaded: 2017-10-19T12:30:00
Description: Watch this Scientific Journal Video about Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants at JoVE.com

이 작품은 자연 과학 재단의 중국 국가 (21301104), 중앙 대학 (FRF-TP-16-019A3), 그리고는 주 키 연구소의 화학 공학 (SKL-체-14A04)에 대 한 근본적인 연구 자금에 의해 지원 되었다.

1. 합성의 모노-(2, 3-dimethylbutyl)에 phosphinic 산 18 , 19 <ol><li>반응 <ol><li>무게 31.80 g 나트륨 hypophosphite 수화물, 16.00 g 초 산, 8.42 g 2, 3-디 메 틸-1-butene, 0.73 g 디-tert-butylnperoxide (DTBP), 그리고 25.00 g tetrahydrofuran (THF) 100ml 테 플 론-줄지어 스테인리스 압력솥에는 압력솥에는 자력을 넣어 그것을 봉인</li>
		<li>수직 튜브로 자기 stirringapparatus는?...

<ol>
	<li>Swain, B., Otu, E. O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Competitive+extraction+of+lanthanides+by+solvent+extraction+using+Cyanex+272:+Analysis,+classification+and+mechanism.">Competitive extraction of lanthanides by solvent extraction using Cyanex 272: Analysis, classification and mechanism.</a> Sep Purif Technol. 83, 82-90 (2011).</li><li>Wang, Y. L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+novel+extraction+process+based+on+CYANEX+(R)+572+for+separating+heavy+rare+earths+from+ion-adsorbed+deposit.">The novel extraction process based on CYANEX (R) 572 for separating heavy rare earths from ion-adsorbed deposit.</a> Sep Purif Technol. 151, 303-308 (2015).</li><li>Regel-Rosocka, M., Staszak, K., Wieszczycka, K., Masalska, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Removal+of+cobalt(II)+and+zinc(II)+from+sulphate+solutions+by+means+of+extraction+with+sodium+bis(2,4,4-trimethylpentyl)phosphinate+(Na-Cyanex+272).">Removal of cobalt(II) and zinc(II) from sulphate solutions by means of extraction with sodium bis(2,4,4-trimethylpentyl)phosphinate (Na-Cyanex 272).</a> Clean Technol Envir. 18 (6), 1961-1970 (2016).</li><li>Hereijgers, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Separation+of+Co(II)/Ni(II)+with+Cyanex+272+using+a+flat+membrane+microcontactor:+Stripping+kinetics+study,+upscaling+and+continuous+operation.">Separation of Co(II)/Ni(II) with Cyanex 272 using a flat membrane microcontactor: Stripping kinetics study, upscaling and continuous operation.</a> Chem Eng Res Des. 111, 305-315 (2016).</li><li>Lee, M. S., Banda, R., Min, S. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Separation+of+Hf(IV)-Zr(IV)+in+H2SO4+solutions+using+solvent+extraction+with+D2EHPA+or+Cyanex+272+at+different+reagent+and+metal+ion+concentrations.">Separation of Hf(IV)-Zr(IV) in H2SO4 solutions using solvent extraction with D2EHPA or Cyanex 272 at different reagent and metal ion concentrations.</a> Hydrometallurgy. 152, 84-90 (2015).</li><li>Noori, M., Rashchi, F., Babakhani, A., Vahidi, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Selective+recovery+and+separation+of+nickel+and+vanadium+in+sulfate+media+using+mixtures+of+D2EHPA+and+Cyanex+272.">Selective recovery and separation of nickel and vanadium in sulfate media using mixtures of D2EHPA and Cyanex 272.</a> Sep Purif Technol. 136, 265-273 (2014).</li><li>Li, X. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Thermodynamics+and+mechanism+of+vanadium(IV)+extraction+from+sulphate+medium+with+D2EHPA,+EHEHPA+and+CYANEX+272+in+kerosene.">Thermodynamics and mechanism of vanadium(IV) extraction from sulphate medium with D2EHPA, EHEHPA and CYANEX 272 in kerosene.</a> Trans Nonferrous Met Soc China. 22 (2), 461-466 (2012).</li><li>Das, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+the+nature+of+organophosphorous+acid+moiety+on+co-extraction+of+U(VI)+and+mineral+acid+from+aqueous+solutions+using+D2EHPA,+PC88A+and+Cyanex+272.">Effect of the nature of organophosphorous acid moiety on co-extraction of U(VI) and mineral acid from aqueous solutions using D2EHPA, PC88A and Cyanex 272.</a> Hydrometallurgy. 152, 129-138 (2015).</li><li>Baba, A. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extraction+of+copper+from+leach+liquor+of+metallic+component+in+discarded+cell+phone+by+Cyanex+(R)+272.">Extraction of copper from leach liquor of metallic component in discarded cell phone by Cyanex (R) 272.</a> JESTEC. 11 (6), 861-871 (2016).</li><li>Du, R. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Microwave-assisted+synthesis+of+dialkylphosphinic+acids+and+a+structure-reactivity+study+in+rare+earth+metal+extraction.">Microwave-assisted synthesis of dialkylphosphinic acids and a structure-reactivity study in rare earth metal extraction.</a> RSC Adv. 5 (126), 104258-104262 (2015).</li><li>Du, R. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=alpha,+beta-Substituent+effect+of+dialkylphosphinic+acids+on+anthanide+extraction.">alpha, beta-Substituent effect of dialkylphosphinic acids on anthanide extraction.</a> RSC Adv. 6 (61), 56004-56008 (2016).</li><li>Wang, J. L., Xu, S. X., Li, L. Y., Li, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+of+organic+phosphinic+acids+and+studies+on+the+relationship+between+their+structure+and+extraction-separation+performance+of+heavy+rare+earths+from+HNO3+solutions.">Synthesis of organic phosphinic acids and studies on the relationship between their structure and extraction-separation performance of heavy rare earths from HNO3 solutions.</a> Hydrometallurgy. 137, 108-114 (2013).</li><li>Hino, A., Nishihama, S., Hirai, T., Komasawa, I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Practical+study+of+liquid-liquid+extraction+process+for+separation+of+rare+earth+elements+with+bis+(2-ethylhexyl)+phosphinic+acid.">Practical study of liquid-liquid extraction process for separation of rare earth elements with bis (2-ethylhexyl) phosphinic acid.</a> J Chem Eng Jpn. 30 (6), 1040-1046 (1997).</li><li>Ju, Z. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+and+extraction+performance+of+di-decylphosphinic+acid.">Synthesis and extraction performance of di-decylphosphinic acid.</a> Chin J Nonferrous Met. 20 (11), 2254-2259 (2010).</li><li>Li, L. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dialkyl+phosphinic+acids:+Synthesis+and+applications+as+extractant+for+nickel+and+cobalt+separation.">Dialkyl phosphinic acids: Synthesis and applications as extractant for nickel and cobalt separation.</a> Trans Nonferrous Met Soc China. 20, 205-210 (2010).</li><li>Wang, J. L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Solvent+extraction+of+rare+earth+ions+from+nitrate+media+with+new+extractant+di-(2,3-dimethylbutyl)-phosphinic+acid.">Solvent extraction of rare earth ions from nitrate media with new extractant di-(2,3-dimethylbutyl)-phosphinic acid.</a> J Rare Earths. 34 (7), 724-730 (2016).</li><li>Hu, W. X. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+and+properties+of+di-tertiary+alkylphosphinic+acids.">Synthesis and properties of di-tertiary alkylphosphinic acids.</a> Chem J Chin Univ-Chin. 15 (6), 849-853 (1994).</li><li>Wang, J. L., Chen, G., Xu, S. M., Li, L. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+of+novel+nonsymmetric+dialkylphosphinic+acid+extractants+and+studies+on+their+extraction-separation+performance+for+heavy+rare+earths.">Synthesis of novel nonsymmetric dialkylphosphinic acid extractants and studies on their extraction-separation performance for heavy rare earths.</a> Hydrometallurgy. 154, 129-136 (2015).</li><li>Wang, J. L., Xie, M. Y., Wang, H. J., Xu, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Solvent+extraction+and+separation+of+heavy+rare+earths+from+chloride+media+using+nonsymmetric+(2,3-dimethylbutyl)(2,4,4'-trimethylpentyl)phosphinic+acid.">Solvent extraction and separation of heavy rare earths from chloride media using nonsymmetric (2,3-dimethylbutyl)(2,4,4'-trimethylpentyl)phosphinic acid.</a> Hydrometallurgy. 167, 39-47 (2017).</li><li>Menoyo, B., Elizalde, M. P., Almela, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Determination+of+the+degradation+compounds+formed+by+the+oxidation+of+thiophosphinic+acids+and+phosphine+sulfides+with+nitric+acid.">Determination of the degradation compounds formed by the oxidation of thiophosphinic acids and phosphine sulfides with nitric acid.</a> Anal Sci. 18 (7), 799-804 (2002).</li><li>Darvishi, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synergistic+effect+of+Cyanex+272+and+Cyanex+302+on+separation+of+cobalt+and+nickel+by+D2EHPA.">Synergistic effect of Cyanex 272 and Cyanex 302 on separation of cobalt and nickel by D2EHPA.</a> Hydrometallurgy. 77, 227-238 (2005).</li></ol>

프로토콜 내에서 가장 중요 한 단계는 모노-alkylphosphinic 산 합성입니다 (그림 1a). 이 반응에서 높은 수율 및 적은 dialkylphosphinic 산 성 부산물이 좋습니다. NaH2포2/olefin A의 어 금 니 비율 증가 수율 향상 되며 dialkylphosphinic 산 성 부산물의 생성을 억제. 그러나, 큰 NaH2포2 복용량 또한 비용을 증가 하 고 교 반 문제가 발생할. NaH2</su...

산 성 organophosphorus extractants 추출 및 분리 희토류 이온1,2, (공동/Ni3,4) 같은 비-철 금속, 희귀 금속 (전통적인 hydrometallurgy 필드에서 널리 이용 된다 Hf/Zr5, V6,7), 같은 actinides8, 등. 최근 몇 년 동안, 그들은 또한 높은 수준의 액체 폐기물 처리9보조 자원 재활용 분야에 더 많은 관심을 받고 있다. 디-(2-ethylhexyl) 인산 D2EHPA (P204), 2-ethylhexylphosphoric 산 성 모노-2-ethylhexyl 에스테 르 (EHEHPA, 88A, PC 또는 P507) 그리고 디-(2, 4, 4'-trimethylpentyl)-phosphinic 산 (Cyanex272), dialkylphosphoric 산의 대표는 alkylphosphoric 산 성 모노 알 킬 에스테 르 및 dialkylphosphinic은 각각, 가장 일반적으로 사용 되는 extractants 있습니다. 그들의 산 성도 다음 순서로 감소: P204 &#62; P507 &#62; Cyanex 272. 해당 추출 능력, 추출 용량 및 스트립 산 성도 모두 P204 순서는 &#62; P507 &#62; Cyanex 272, 반대 순서로 분리 성능입니다. 이 3 개의 extractants는 대부분의 경우에 효과적입니다. 그러나, 여전히 몇 가지 조건이 있다 어디 있는지 너무 효율적: 무거운 희토류 분리는 기존 하는 주요 문제는 가난한 선택도 및 P204 및 P507, 높은 스트립 산 낮은 추출 용량 및 유제 경향 동안에 Cyanex 272에 대 한 추출. 따라서, 소설 extractants의 개발은 최근 몇 년 동안에서 큰 관심을 받고 있다.
Dialkylphosphinic 산 extractants의 클래스는 새로운 extractants를 개발 하는 가장 중요 한 연구 측면 중 하나 간주 됩니다. 최근 연구에 dialkylphosphinic 산의 추출 능력 알 킬 치환 기10,11의 구조에 크게 의존 했다. 그것은 Cyanex 27212의 그것 보다 낮은 P507의 그것 보다 훨씬 더 높은에서 광범위 한 수 있습니다. 그러나, 소설 dialkylphosphinic 산 extractants의 탐험은 상업 올레 구조10,12,13,,1415, 제한 16. Dialkylphosphinic 산 extractants 또한 그리 반응 방법으로 종합 될 수, 있지만 반응 조건은 엄격한12,17입니다.
NSDAPA, 2 개의 alkyls는 다른, 새로운 extractants의 탐험에 문을 엽니다. Dialkylphosphinic 산의 구조 더 다양 한와 그것의 추출 및 분리 성능을 모두 알 킬 구조를 수정 하 여 미세 조정 수 있습니다. NSDAPA의 전통적인 합성 방법 높은 독성, 엄격한 반응 조건, 그리고 어려운 정화 같은 많은 단점이 인 원본으로 PH3 사용. 최근 우리 NSDAPA 한 인 ( 그림 1참조) 소스와 성공적으로 합성 3 NSDAPAs18나트륨 hypophosphite를 사용 하 여 합성 하는 새로운 방법을 보고. 이 상세한 프로토콜 새로운 실무자 실험을 반복 하 고 NSDAPA extractants의 합성 방법 마스터 수 있습니다. 우리 (2, 3-dimethylbutyl) (2, 4, 4'-trimethylpentyl) 예를 들어 phosphinic 산. 이름 및 올레 A, 중간 모노-alkylphosphinic 산, 올레 B, 및 해당 NSDAPA의 구조는 표 1에 표시 됩니다.

<table style="border-collapse:collapse;width:687pt" width="916">
	<colgroup>
		<col style="width:185pt" width="247" />
		<col style="width:290pt" width="387" />
		<col style="width:93pt" width="124" />
		<col style="width:119pt" width="158" />
	</colgroup>
	<tbody>
		<tr height="102" style="height:76.5pt">
			<td class="xl17" height="102" style="width:185pt;height:76.5pt" width="247">sodium hypophosphite hydrate</td>
			<td class="xl17" style="width:290pt" width="387">Tianjin Fuchen Chemical Reagents Factory</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: NaH2PO2&#8729;H2O, purity &#8805;99.0%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">2,3-dimethyl-1-butene</td>
			<td class="xl17" style="width:290pt" width="387">Adamas Reagent Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C6H12, purity &#8805;99%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">diisobutylene</td>
			<td class="xl17" style="width:290pt" width="387">Shanghai&#160;Aladdin&#160;Bio-Chem&#160;Technology&#160;Co.,&#160;LTD</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C8H16, purity 97%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">acetic acid</td>
			<td class="xl17" style="width:290pt" width="387">Sinopharm Chemical Reagent Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C2H4O2, purity &#8805;99.5%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">di-tert-butylnperoxide</td>
			<td class="xl17" style="width:290pt" width="387">Sinopharm Chemical Reagent Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C8H18O2, purity &#8805;97.0%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">tetrahydrofuran</td>
			<td class="xl17" style="width:290pt" width="387">Beijing Chemical Works</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C4H8O, purity A.R.</td>
		</tr>
		<tr height="102" style="height:76.5pt">
			<td class="xl17" height="102" style="width:185pt;height:76.5pt" width="247">amantadine hydrochloride</td>
			<td class="xl17" style="width:290pt" width="387">Shanghai&#160;Aladdin&#160;Bio-Chem&#160;Technology&#160;Co.,&#160;LTD</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C10H17N&#8729;HCl, purity 99%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">ethyl ether</td>
			<td class="xl17" style="width:290pt" width="387">Sinopharm Chemical Reagent Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C4H10O, purity &#8805;99.7%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">ethyl acetate</td>
			<td class="xl17" style="width:290pt" width="387">Xilong Chemical Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C4H8O2, purity &#8805;99.5%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">acetone</td>
			<td class="xl17" style="width:290pt" width="387">Beijing Chemical Works</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: C3H6O, purity &#8805;99.5%</td>
		</tr>
		<tr height="75" style="height:56.25pt">
			<td class="xl17" height="75" style="width:185pt;height:56.25pt" width="247">sodium hydroxide</td>
			<td class="xl17" style="width:290pt" width="387">Xilong Chemical Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: NaOH, purity &#8805;96.0%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">concentrated sulfuric acid</td>
			<td class="xl17" style="width:290pt" width="387">Sinopharm Chemical Reagent Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: H2SO4, purity 95-98%</td>
		</tr>
		<tr height="75" style="height:56.25pt">
			<td class="xl17" height="75" style="width:185pt;height:56.25pt" width="247">hydrochloric acid</td>
			<td class="xl17" style="width:290pt" width="387">Beijing Chemical Works</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: HCl, purity 36-38%</td>
		</tr>
		<tr height="75" style="height:56.25pt">
			<td class="xl17" height="75" style="width:185pt;height:56.25pt" width="247">sodium chloride</td>
			<td class="xl17" style="width:290pt" width="387">Sinopharm Chemical Reagent Co., Ltd.</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: NaCl, purity &#8805;99.5%</td>
		</tr>
		<tr height="77" style="height:57.75pt">
			<td class="xl17" height="77" style="width:185pt;height:57.75pt" width="247">anhydrous magnesium sulfate</td>
			<td class="xl17" style="width:290pt" width="387">Tianjin Jinke Institute of Fine Chemical Industry</td>
			<td class="xl17" style="width:93pt" width="124"></td>
			<td class="xl17" style="width:119pt" width="158">Molecular formula: MgSO4, purity &#8805;99.0%</td>
		</tr>
		<tr height="103" style="height:77.25pt">
			<td class="xl19" height="103" style="width:185pt;height:77.25pt" width="247">Cobalt(II) chloride hexahydrate</td>
			<td class="xl19" style="width:290pt" width="387">Xilong Chemical Co., Ltd.</td>
			<td class="xl19" style="width:93pt" width="124"></td>
			<td class="xl19" style="width:119pt" width="158">Molecular formula: CoCl2&#8729;6H2O, purity &#8805;99.0%</td>
		</tr>
	</tbody>
</table>

synthesis of high purity nonsymmetric dialkylphosphinic acid extractants

우리 선물의 합성 (2, 3-dimethylbutyl) (2, 4, 4'-trimethylpentyl) 고 순도 nonsymmetric dialkylphosphinic 산 extractants의 합성에 대 한 메서드를 보여 주기 위해 예제로 phosphinic 산. 낮은 독성 나트륨 hypophosphite 올레와 반응 인 소스는 (2, 3-디 메 틸-1-butene) 중간 monoalkylphosphinic 산을 생성 하기 위해 선정 되었다. 소나만 monoalkylphosphinic 산 dialkylphosphinic 산 수 없습니다 때문에 소나로 반작용 하는 동안 amantadine∙mono alkylphosphinic 산 성 소금 형성 소나 반응 수로 dialkylphosphinic 산 성 부산물을 제거 하 채택 되었다 그것의 큰 입체 지 장입니다. 순화 monoalkylphosphinic 산 다음 올레 B (diisobutylene) nonsymmetric dialkylphosphinic 산 (NSDAPA)를 가진 반응 했다. Unreacted monoalkylphosphinic 산 간단한 기본 산 후 처리에 의해 쉽게 제거 될 수 있다 고 다른 유기 불순물 코발트 소금의 강 수를 통해 밖으로 분리 될 수 있다. 구조는 (2, 3-dimethylbutyl) (2, 4, 4'-trimethylpentyl) phosphinic 산 31P NMR, 1H NMR, ESI-MS, 및 FT-적외선에 의해 확인 되었다 순도 potentiometric 적정 방법으로 결정 했다 고는 나타냅니다 순도 96%를 초과할 수 있습니다.

31 P NMR 스펙트럼 수집 했다 모노-(2, 3-dimethylbutyl) phosphinic 산에 대 한 정화 전후 소나 메서드 (그림 1-b). 31 P NMR 스펙트럼, 1H NMR 스펙트럼, MS 스펙트럼 및 FT-적외선 스펙트럼에 대 한 수집 (2, 3-dimethylbutyl) (2, 4, 4'-trimethylpentyl) phosphinic 산 (참조 그림 3, 그림 4, <strong class="xfig...

Watch this Scientific Journal Video about Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants at JoVE.com

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants

고 순도 Nonsymmetric Dialkylphosphinic 산 Extractants의 합성

고 순도 nonsymmetric dialkylphosphinic 산 extractants의 합성에 대 한 프로토콜 제시, 복용 (2, 3-dimethylbutyl) (2, 4, 4'-trimethylpentyl) 예를 들어 phosphinic 산.

We present the synthesis of (2,3-dimethylbutyl)(2,4,4&#39;-trimethylpentyl)phosphinic acid as an example to demonstrate a method for the synthesis of high ...

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