✦ LIBER ✦

Preparation and Catalytic Properties of Amphiphilic Copolymer-Stabilized Platinum Metals Colloids

✍ Scribed by Weixia Tu; Hanfan Liu; Kong Yong Liew

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 428 KB
Volume: 229
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.2000.7041

No coin nor oath required. For personal study only.

✦ Synopsis

Several metal colloids stabilized by an amphiphilic copolymer, poly(1-vinylpyrrolidone-co-acrylic acid) (abbreviated as PVPAA), were prepared by refluxing alcohol-water mixed solutions of the corresponding metal precursors. They had small particle sizes and narrow size distributions. Their catalytic activity was tested by hydrogenation of cyclooctene, 1-dodecene, and ortho-chloronitrobenzene (o-CNB). With the introduction of nickel(II) ions to a PVPAAstabilized platinum catalytic system, selective hydrogenation of o-CNB to ortho-chloroaniline (o-CAN) with 97.1% selectivity and 100% conversion was obtained.

📜 SIMILAR VOLUMES

Preparation, Characterization, and Catal

Preparation, Characterization, and Catalytic Properties of Polymer-Stabilized Ruthenium Colloids

✍ Weiyong Yu; Manhong Liu; Hanfan Liu; Xiaoming Ma; Zhijie Liu 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 439 KB

Poly(N-vinyl-2-pyrrolidone) (PVP)-stabilized ruthenium colloids were prepared by NaBH 4 reduction at room temperature and characterized by transmission electron microscopy and x-ray photoelectron spectra. The average diameters of the colloids were 1.3-1.8 nm with ‫؍‬ 0.4 -0.7 nm with respect to the

Preparation and Characterization of Poly

Preparation and Characterization of Polymer-Stabilized Ruthenium–Platinum and Ruthenium–Palladium Bimetallic Colloids and Their Catalytic Properties for Hydrogenation of o-Chloronitrobenzene

✍ Manhong Liu; Weiyong Yu; Hanfan Liu; Jingming Zheng 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 91 KB

Colloidal dispersions of poly(N-vinyl-2-pyrrolidone) (PVP)-stabilized ruthenium-platinum and ruthenium-palladium bimetallic colloids were prepared by NaBH 4 reduction of the corresponding mixedmetal salts at room temperature and characterized by TEM, XPS, and XRD. The resulting bimetallic colloids w

Preparation of styrene–divinyl benzene c

Preparation of styrene–divinyl benzene copolymer-supported platinum complexes and their catalytic properties in hydrosilylation

✍ Chengyou Kan; Qing Yuan; Aiguo Luo; Xiangzheng Kong 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 245 KB 👁 2 views

A new type of catalyst for the hydrosilylation of unsaturated monomers with dichloromethylsilane (DCMS) was prepared, which consisted of thiolmethylene-substituted styrene-divinyl benzene copolymer and platinum. When using DCMS as a hydrosilylation agent, these catalysts showed a high activity in th

Immobilization of Polymer-Stabilized Nob

Immobilization of Polymer-Stabilized Noble Metal Colloids and Their Catalytic Properties for Hydrogenation of Olefins

✍ Qian Wang; Hanfan Liu; Hongge Wang 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 305 KB

Polymer-stabilized noble metal colloids were efficiently immobilized on silica by the addition of organic acids under mild conditions. The function of organic acids in the immobilization was studied by infrared spectroscopy. Transmission electron micrographs indicate that the immobilized colloids ha

Poly(N-isopropylacrylamide)-grafted sili

Poly(N-isopropylacrylamide)-grafted silica as a support of platinum colloids: Preparation method, characterization, and catalytic properties in hydrogenation

✍ Kazuya Suzuki; Takeshi Yumura; Masaaki Mizuguchi; Yuko Tanaka; Chun-Wei Chen; Mi 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 162 KB 👁 2 views

Preparation of novel amphiphilic copolym

Preparation of novel amphiphilic copolymer microspheres and their drug-release and glucose-sensitive properties

✍ Yu Tang; Chaoxing Li 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB 👁 1 views