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Reactive Polymers, Ion Exchangers, Sorbents最新文献

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Anion exchange-type resins in preparative organic chemistry: structure-activity relationship 阴离子交换型树脂在制备有机化学中的构效关系
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90031-1
Roberto Solaro, Salvatore D'Antone, Emo Chiellini
{"title":"Anion exchange-type resins in preparative organic chemistry: structure-activity relationship","authors":"Roberto Solaro,&nbsp;Salvatore D'Antone,&nbsp;Emo Chiellini","doi":"10.1016/0167-6989(88)90031-1","DOIUrl":"10.1016/0167-6989(88)90031-1","url":null,"abstract":"<div><p>A critical overview is presented on the use of anion-exchange-type resins, conventional and modified, including also polymeric crown ethers and related moieties,as catalysts in organic synthesis. The analysis of the available material has been organized to highlight the effects of specific structural and physical parameters of the polymer matrix, such as loading extent and topology of active sites, degree of crosslinking, porosity, surface area and particle size. Semi-quantitative evaluation of the above parameters has been carried out by comparing the specific activity and selectivity of polymer catalysts with their low molar mass analogues in standard nucleophilic substitution, addition and elimination reactions. Examples have been included of polymer catalysts that are more active and sometimes more selective than the corresponding low molecular weightanalogues. Cooperative effects of polymer-constrained structural units play a key role in determining the reported behaviour.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90031-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88853207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Stability against oxidation of a type-I anion exchanger. I. The effect of persulfate ion on capacity and swelling ⅰ型阴离子交换剂的抗氧化稳定性。1 .过硫酸盐对容量和溶胀的影响
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90032-3
Robert E. Gibbons Jr., Gilbert E. Janauer
{"title":"Stability against oxidation of a type-I anion exchanger. I. The effect of persulfate ion on capacity and swelling","authors":"Robert E. Gibbons Jr.,&nbsp;Gilbert E. Janauer","doi":"10.1016/0167-6989(88)90032-3","DOIUrl":"10.1016/0167-6989(88)90032-3","url":null,"abstract":"<div><p>The effect of the strong anionic oxidant persulfate, S<sub>2</sub>O<sub>8</sub><sup>2−</sup>, on the ion exchange capacity of Bio-Rad AG1-X4 100–200 mesh anion exchange resin was investigated when present as the counterion, i.e., with the exchanger in the reactive persulfate form. The decrease of ion exchange capacity as a function of time and the increase in swelling due to scission of polymer chains by the oxidant were determined. It was found that very little (dry) capacity loss occurred during storage of air-dried S<sub>2</sub>O<sub>8</sub><sup>2−</sup>-form resins at ambient temperature. However, a progressive decrease in capacity was noted when the resin samples were kept fully water swollen. The potential effect of initial pH was briefly examined. Some experiments with chromate- and vanadate-form resins were also carried out.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90032-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77605292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Books recieved Books recieved
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90038-4
{"title":"Books recieved","authors":"","doi":"10.1016/0167-6989(88)90038-4","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90038-4","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90038-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137064439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Book reviewIon exchange and sorption processes in hydrometallurgy: M. Streat and D. Naden (Eds.), published by John Wiley & Sons, Ltd. for the Society of Chemical Industry, London, 1987, x+229 pages, hardcover, $91.95 书评:湿法冶金中的交换和吸附过程:M. Streat和D. Naden(编)，John Wiley & Sons, Ltd.为化学工业协会出版，伦敦，1987年，x+229页，精装，91.95美元
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90035-9
Y. Marcus
{"title":"Book reviewIon exchange and sorption processes in hydrometallurgy: M. Streat and D. Naden (Eds.), published by John Wiley & Sons, Ltd. for the Society of Chemical Industry, London, 1987, x+229 pages, hardcover, $91.95","authors":"Y. Marcus","doi":"10.1016/0167-6989(88)90035-9","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90035-9","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89564152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatial distribution of pendent vinyl groups during chloromethylation of macroporous styrene-divinylbenzene copolymers 大孔苯乙烯-二乙烯基苯共聚物氯甲基化过程中悬垂乙烯基的空间分布
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90030-X
M. Bacquet, C. Cazé, J. Laureyns, C. Brémard
{"title":"Spatial distribution of pendent vinyl groups during chloromethylation of macroporous styrene-divinylbenzene copolymers","authors":"M. Bacquet, C. Cazé, J. Laureyns, C. Brémard","doi":"10.1016/0167-6989(88)90030-X","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90030-X","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80998933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Supported metal complexes 负载金属配合物
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90037-2
D.C. Sherrington
{"title":"Supported metal complexes","authors":"D.C. Sherrington","doi":"10.1016/0167-6989(88)90037-2","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90037-2","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90037-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89995940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Spatial distribution of pendent vinyl groups during chloromethylation of macroporous styrene-divinylbenzene copolymers 大孔苯乙烯-二乙烯基苯共聚物氯甲基化过程中悬垂乙烯基的空间分布
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90030-X
M. Bacquet, C. Caze, J. Laureyns, C. Bremard
{"title":"Spatial distribution of pendent vinyl groups during chloromethylation of macroporous styrene-divinylbenzene copolymers","authors":"M. Bacquet,&nbsp;C. Caze,&nbsp;J. Laureyns,&nbsp;C. Bremard","doi":"10.1016/0167-6989(88)90030-X","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90030-X","url":null,"abstract":"<div><p>During chloromethylation of macroporous styrene-divinylbenzene copolymers, postreticulation of unreacted vinyl groups takes place as side reaction. Local molecular analysis by Roman microspectrometry showed that the distribution of pendent vinyl groups inside the copolymers heads after chloromethylation was heterogeneous. The relationship between the distribution of chlorine-containing groups and vinyl groups was studied, and their inhomogeneous distribution explained by the textural heterogeneity of the heads and by postreticulation affecting the centre more than the periphery of the heads.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90030-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90127932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Monovalent/divalent selectivity and the charge separation concept 单价/二价选择性和电荷分离概念
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90033-5
Suresh Subramonian, Dennis Clifford
{"title":"Monovalent/divalent selectivity and the charge separation concept","authors":"Suresh Subramonian,&nbsp;Dennis Clifford","doi":"10.1016/0167-6989(88)90033-5","DOIUrl":"10.1016/0167-6989(88)90033-5","url":null,"abstract":"<div><p>This article establishes the importance of the active site spacing in the resin matrix on the relative selectivity for monovalent and divalent ions. The selectivity trends of dicarboxylate/chloride exchange on trialkylamine resins provide experimental verification of the hypothesis that resins with closely spaced functionalities have an inherent preference for divalent ions over monovalent ions. For a typical trimethylamine resin, the isotherm data show a monotonic decrease in selectivity with chain length whereas for the triethyl and tributylamine resins, an increase followed by a decrease in selectivity is observed. A theoretical analysis of ion exchange equilibria is developed to quantify the hydrophobic and electrostatic components of the overall dianion selectivity. A phenomenological model is used to estimate the site spacing distance for each resin and the results suggest a nonhomogeneous distribution of ionogenic groups in the gel phase. The charge separation concept, which is applicable to both anion and cation exchangers, is validated with supportive evidence from other research studies.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90033-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72896788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
The use of modified sporopollenin from Lycopodium clavatum as a novel ion- or ligand-exchange medium 利用改良的棒状石蒜孢粉作为新型离子或配体交换介质
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90034-7
G. Shaw, M. Sykes, R.W. Humble, G. Mackenzie, D. marsden, E. Pehlivan
{"title":"The use of modified sporopollenin from Lycopodium clavatum as a novel ion- or ligand-exchange medium","authors":"G. Shaw,&nbsp;M. Sykes,&nbsp;R.W. Humble,&nbsp;G. Mackenzie,&nbsp;D. marsden,&nbsp;E. Pehlivan","doi":"10.1016/0167-6989(88)90034-7","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90034-7","url":null,"abstract":"<div><p>The outer coat (exine) of plant pollen grains and many related microspores derived from algae or fungi is composed of the material sporopollenin, probably produced biochemically by an enzyme-controlled oxidative polymerisation of carotenoids. Sporopollenin is exceptionally resistant to chemical and physical attack. The material from the commercially available <em>Lycopodium clavatum</em> retains the full morphology of the original spore grain after processing. It may also be functionalised without any change in microscopic appearance by direct amination with ethylene or propylene diamine, sulphonation with chlorosulphonic acid and carboxyalkylation of the former aminoethylsporopollenin which produces a carboxymethylsporopollenin. These materials have been used as column materials for the successful separation of a selection of nucleosides, nucleotides, α-amino acids and transition metals. The advantages of sporopollenin over conventional ion-exchange materials are discussed.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90034-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91764616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
High resolution NMR spectroscopy of synthetic polymers in bulk 合成聚合物体的高分辨率核磁共振波谱
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-11-01 DOI: 10.1016/0167-6989(88)90036-0
L. Petrakis
{"title":"High resolution NMR spectroscopy of synthetic polymers in bulk","authors":"L. Petrakis","doi":"10.1016/0167-6989(88)90036-0","DOIUrl":"10.1016/0167-6989(88)90036-0","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90036-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"102621935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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