发布求助
文献互助 智能选刊 最新文献

Reactive Polymers, Ion Exchangers, Sorbents最新文献

筛选
英文 中文
Immobilization of 2,4-ionene on an XAD-2 resin, and its effect on the cobaltphthalocyanine-catalyzed oxidative coupling of thiol 2,4-碘烯在XAD-2树脂上的固定化及其对钴酞菁催化硫醇氧化偶联反应的影响
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90083-9
{"title":"Immobilization of 2,4-ionene on an XAD-2 resin, and its effect on the cobaltphthalocyanine-catalyzed oxidative coupling of thiol","authors":"","doi":"10.1016/0167-6989(88)90083-9","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90083-9","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90083-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138305311","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
Microsomes and enzymes immobilized on grafted polyethylenes 在接枝聚乙烯上固定化微粒体和酶
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90048-7
T.I. Davidenko, S.A. Andronati
{"title":"Microsomes and enzymes immobilized on grafted polyethylenes","authors":"T.I. Davidenko,&nbsp;S.A. Andronati","doi":"10.1016/0167-6989(88)90048-7","DOIUrl":"10.1016/0167-6989(88)90048-7","url":null,"abstract":"<div><p>Immobilization of microsomal fractions, proteolytic enzymes and urease on polyethylene-grafted poly(acrylic acid), poly(allyl alcohol) and poly(allylamine) was investigated. Immobilization of microsomal fractions on polyethylene-grafted poly(allyl alcohol) and poly(acrylic acid) preserved 108 and 31.5% of aniline hydroxylase activity and 125 and 109% of <em>N,N</em>-dimethylaniline demethylase activity, respectively. An increased pH, temperature, and storage stability of the immobilized microsomes was observed. Column operation was performed as well. Positive results were also obtained in the immobilization of urease and <em>Bacillus mesentericus</em> protease.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90048-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78022704","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
Towards the optimization of polymer-supported catalysts: Relationship between local reaction medium and catalyst efficiency 聚合载体催化剂优化研究:局部反应介质与催化剂效率的关系☆
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90046-3
André Deratani, Thierry Maraldo, Graham D Darling , Jean M.J Fréchet
{"title":"Towards the optimization of polymer-supported catalysts: Relationship between local reaction medium and catalyst efficiency","authors":"André Deratani,&nbsp;Thierry Maraldo,&nbsp;Graham D Darling ,&nbsp;Jean M.J Fréchet","doi":"10.1016/0167-6989(88)90046-3","DOIUrl":"10.1016/0167-6989(88)90046-3","url":null,"abstract":"<div><p>In order to optimize the design of polymer-bound dialkylaminopyridine catalysts, several such heterogeneous catalysts have been evaluated in the acylation of a hindered tertiary alcohol. In particular, the microenvironment and local polarity near the catalytic sites and its influence on catalyst performance has been studied. Comparisons with literature data provide an explanation for some of the differences in reactivities observed by others and confirm that it is important to design the catalysts such that their reactive sites are surrounded by non-polar moieties. Novel approaches such as the grafting of reactive groups onto polyethylene or polytetrafluoroethylene have been tested.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90046-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88266834","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: 3
FeCl3 immobilized on crosslinked 4-vinylpyridine-poly(ethylene oxide) copolymers as catalyst in the synthesis of 2-hydroxyethyl methacrylate 交联4-乙烯基吡啶-聚环氧乙烷共聚物固定化FeCl3催化合成甲基丙烯酸2-羟乙酯
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90054-2
R. Stamenova , P. Ivanova , R. Boeva , C. Tsvetanov
{"title":"FeCl3 immobilized on crosslinked 4-vinylpyridine-poly(ethylene oxide) copolymers as catalyst in the synthesis of 2-hydroxyethyl methacrylate","authors":"R. Stamenova ,&nbsp;P. Ivanova ,&nbsp;R. Boeva ,&nbsp;C. Tsvetanov","doi":"10.1016/0167-6989(88)90054-2","DOIUrl":"10.1016/0167-6989(88)90054-2","url":null,"abstract":"<div><p>Polymer-immobilized metal complexes were prepared by sorption of FeCl<sub>3</sub> and chromium compounds on latex particles of crosslinked 4-vinylpyridine-poly(ethylene oxide) copolymers. Catalytic activity and selectivity of these complexes in the esterification reaction of methacrylic acid and ethylene oxide were studied. They provide high degrees of conversion (96–100%) with minor formation of by-products. On repeated use the catalytic activity slightly decreases.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90054-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88659314","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
Polymer-supported titanium-magnesium catalysts for ethylene polymerization 聚合物负载的乙烯聚合钛镁催化剂
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90055-4
A.M. Bochkin, A.D. Pomogailo, F.S. Dyachkovskii
{"title":"Polymer-supported titanium-magnesium catalysts for ethylene polymerization","authors":"A.M. Bochkin,&nbsp;A.D. Pomogailo,&nbsp;F.S. Dyachkovskii","doi":"10.1016/0167-6989(88)90055-4","DOIUrl":"10.1016/0167-6989(88)90055-4","url":null,"abstract":"<div><p>A new method for synthesis of polymer-supported organometallic titanium-magnesium catalysts was developed. The catalysts contain up to 55% of total fixed Ti in the form of isolated Ti(III) ions. Ti(III) is formed in the alkylation of Ti(IV) by polymer-supported Mg species. Ti(III) is assumed to coordinate to the polymer support moieties at low Ti(III) content, and to form layers at high Ti(III) content in the catalysts. X-ray analysis indicated the presence of crystallites with dimensions of approximately 4–7.5 nm. The catalytic activity in ethylene polymerization depends on the amount of fixed magnesium. A correlation between catalyst activity and isolated Ti(III) ion content was found. Kinetic parameters of the polymerization in the presence of titanium-magnesium catalysts supported on organic and inorganic carriers were compared. Rate constants for chain transfer to monomer, organoaluminium cocatalysts and hydrogen were calculated.</p></div>","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90055-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90333399","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
Asymmetric hydroformylation catalyzed by polymer-supported chiral platinum complexes 聚合物负载的手性铑配合物催化的不对称氢甲酰化反应。
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90062-1
{"title":"Asymmetric hydroformylation catalyzed by polymer-supported chiral platinum complexes","authors":"","doi":"10.1016/0167-6989(88)90062-1","DOIUrl":"10.1016/0167-6989(88)90062-1","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90062-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"93296592","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
Synthesis and structure investigation of immobilized heterometallic complexes 固定化异质金属配合物的合成及结构研究
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90114-6
{"title":"Synthesis and structure investigation of immobilized heterometallic complexes","authors":"","doi":"10.1016/0167-6989(88)90114-6","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90114-6","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90114-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138241490","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
Immobilized mono- and binuclear chelates of nickel(II) and cobalt(II) 镍(II)和钴(II)的固定化单核和双核螯合物
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90115-8
{"title":"Immobilized mono- and binuclear chelates of nickel(II) and cobalt(II)","authors":"","doi":"10.1016/0167-6989(88)90115-8","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90115-8","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90115-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138241491","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
Polybenzimidazole resin based new chelating agents. Ferric ion selectivity of resins with immobilized polyamines 聚苯并咪唑树脂基新型螯合剂。固定化多胺树脂的铁离子选择性
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90106-7
{"title":"Polybenzimidazole resin based new chelating agents. Ferric ion selectivity of resins with immobilized polyamines","authors":"","doi":"10.1016/0167-6989(88)90106-7","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90106-7","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90106-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138260148","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
Preparation and photochemical properties of polymers containing 1-(4-benzylphenyl or 4-benzoylphenyl)-2-propen-1-one structural units 含1-(4-苯基苯基或4-苯甲酰苯基)-2-丙烯-1- 1结构单元聚合物的制备及光化学性质
Reactive Polymers, Ion Exchangers, Sorbents Pub Date : 1988-09-01 DOI: 10.1016/0167-6989(88)90109-2
{"title":"Preparation and photochemical properties of polymers containing 1-(4-benzylphenyl or 4-benzoylphenyl)-2-propen-1-one structural units","authors":"","doi":"10.1016/0167-6989(88)90109-2","DOIUrl":"https://doi.org/10.1016/0167-6989(88)90109-2","url":null,"abstract":"","PeriodicalId":101060,"journal":{"name":"Reactive Polymers, Ion Exchangers, Sorbents","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-6989(88)90109-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138260152","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信