检索结果-南通市图书馆

Synthesis of Polymer-Supported Heteronuclear Rhodium- Cobalt Bimetallic Carbonyl Cluster Catalysts and Their Hydroformylation Properties

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1989年第4期5卷 357-362页

作者： He Binglin(Ho Ping-Lum), sun juntan, Li Hong, Sang Junjie and Zhao Fenzhi (Institute of Polymer Chemistry, Nankai University, Tianjin)

Tetranuclear Rh-Co bimetallic cluster was synthesized and characterized by IR and XPS. The properties of the anchored catalysts, its stability and the ligand effect were also studied. The experimental results show that the optimal conditions for the hydroformylation of hexene-1 are as follows: the temperature is 80℃, reaction time 8 h, pressure 5. 88×105 Pa, and molar ratio of H2/CO 1. 2/1. 0. Functional groups attached to the donor atom(N) possess more or less some influence on the catalytic behavior. Compared with the homogeneous cluster, the polymer-supported bimetallic cluster is more stable. After the catalytic reaction, the structure of the anchored catalysts was not destroyed. X-ray photoelectron spectroscopy characterization indicates that there is a weak interaction between the polymer support and the active metals.

关键词： Rhodium-cobalt cluster Polymer-supported catalysts Hydroformylation

THE SYNTHESIS AND CHARACTERIZATION OF SOME POROUS RESINS AND THEIR ADSORPTION PROPERTY ON STEVIA GLYCOSIDES

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Reactive Polymers 1998年第2期7卷 32-38页

作者： ZhangYang Chen Tianhong Liu Xiaohang He Binglin Shi Zuoqing sun juntan Institute of Polymer Chemistry Nankai UniversityTianjin 300071China

A series of porous resins (PYR) with different content of pyridyl group were prepared,and their physical structure and adsorption properties on the stevia glycosides werestudied in detail. Afler the selective adsorption of PYR resins, the rebaudioside A couldbe separated hem the other components of the stevia glycosides, and a new methodforobtaining pure rebaudioside A is reported.

关键词： Rebaudioside A Separation porous resins

STUDIES ON MACROPOROUS POLYMER SUPPORTED ASYMMETRIC HYDROGENATION CATALYSTS

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Reactive Polymers 1993年第2期2卷 129-135页

作者： XU Guochun sun juntan and HE Binglin (Inst. Polym. Chem. , Nankai University, Tianjin 300071)

The supported Rh-DIOP complexes were prepared through functionalization of several macroporous polystyrene resins nd were evaluated by the hydrogenation of acetamidocinnamic acid in *** pore effect of the matrixes was... 详细信息

关键词：大孔聚合物催化剂不对称氢化作用铑络合物二磷烷二膦

PROPERTIES OF HIGHLY DISPERSED PALLADIUM CATALYSTS ON POLY N-VINYL-2-PYRROLIDONE

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Reactive Polymers 1992年第1期1卷 48-53页

作者： sun juntan, CHEN Chunfu, LI Hong, and HE Binglin Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China

Four kinds of palladium catalysts dispersed on poly-N-vinyl-2-pyrrolidone were prepared by using CH3OH-NaOH,NaBH4,H2O or CH3OH-H2O as the reducing agent in the process of catalyst preparation. The catalysts were characterized by XPS,TEM,XRD and used for the hydrogenation of methyl *** was found that the valence state of palladium and distribution of palladium particles as well as the hydrogenation rate were greatly affected by the reducing *** best evenly dispersed palladium catalyst showing high hydrogenation activity was prepared using CH3OH-NaOH as the reducing agent.

关键词：高分散钯催化剂聚N-乙烯基-2-吡咯烷酮制备性质

METATHESIS OF 1-HEXENE OVER MOLYBDENUM AND TUNGSTEN CATALYSTS IMMOBILIZED ON POLYMERS

在线全文

学校读者我要写书评

暂无评论

分子催化 1989年第S1期3卷 35-41页

作者： Liao Shijian, Guo Yiping, Yu Shuwen, Yu Daorong, Guo Hefu (Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China)He Binglin, sun juntan, Li Hong (Institute of Polymer Chemistry, Nankai University, Tianjin, China)

Molybdenum and tungsten components in catalysts Bu4N〔Mo（CO）5Cl〕-EtAlCl2andWCl6-Bu4Sn were immobilized respectively on *** influence of immobilization ofthe soluble catalysts on their catalytic behavior in the metathesis of 1—hexene was *** has been found that polystyrene is a good supporting material among all thepolymers *** immobilized catalysts have higher stability and better selectivity incomparison with their homogeneous *** metathesis yield of 1-hexene is in-creased by fourfold with WCl6immobilized on *** reason for the increase ofstability of the immobilized catalyst is discussed.

关键词： polystyrene tungsten OVER immobilization gated selectivity creased adding paramagnetic supporting

SYNTHESIS　OF　POLYMER－SUPPORTED　PALLADIUM　CATALYSTS　AND　THEIR　CATALYTIC　BEHAVIOR　FOR　THE　SELECTIVE　HYDROGENATION　OF　MESITYL　OXIDE

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Reactive Polymers 1996年第1期5卷 26-31页

作者： Li Hong Jin Xiaonong sun juntan He Binglin(State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation,Institute of Polymer Chemistry, Nankai Universitry, Tianjin 300071, P. R. China)

polymer of styrene-divinylbenzene in bead form was made by suspension polymerization. After chloromethylation and amination, five kinds of polynZeric ammes were thus obtained. These polymers were reacted with palladium chloride, and were then reduced. The polymer-supported catalysts synthesized above were used to catalyze the selective hofrogenation Of mesityl oxide under reaction conditions Of 80t and 10kg/cm￣2, using methanol as a *** catalytic activity and MIBK (methyl isobutyl ketone) formation selectivity of the catalysts were examined.

关键词：合成钯聚合物催化行为选择性氢化作用异亚丙基丙酮一缩二丙酮莱基化氧

硅胶负载的双高分子-钯催化剂的研究——Ⅰ.硅胶负载的聚[4(2)-乙烯吡啶]-聚[苯乙烯-顺丁烯二酸]-钯催化剂的合成及其催化加氢性能

在线全文

学校读者我要写书评

暂无评论

高分子学报 1989年第5期 572-578页

作者：杨士勇孙君坦李弘何炳林南开大学高分子化学研究所

合成了硅胶负载的聚(4-乙烯吡啶)或聚(2-乙烯吡啶)-聚(苯乙烯-顺丁烯二酸)-钯催化剂(P4VP-PSM-Pd/SiO_2和P2VP-PSM-Pd/SiO_2),研究了合成条件、组成等对其催化性能的影响及对丙烯酸甲酯的催化加氢性能。发现,同时含两种高分子的催化剂... 详细信息

合成了硅胶负载的聚(4-乙烯吡啶)或聚(2-乙烯吡啶)-聚(苯乙烯-顺丁烯二酸)-钯催化剂(P4VP-PSM-Pd/SiO_2和P2VP-PSM-Pd/SiO_2),研究了合成条件、组成等对其催化性能的影响及对丙烯酸甲酯的催化加氢性能。发现,同时含两种高分子的催化剂比只含一种高分子的催化剂具有较高的催化活性,催化剂在常温常压下对丙烯酸甲酯的氢化反应具有很高的催化活性和选择性,且能重复使用,表现出良好的稳定性。同时还研究了其它因素对催化剂性能的影响。

关键词：催化剂双高分子-钯合成催化氢化