PT/SIO2 CATALYSTS - A COMPARISON OF THE IMPREGNATION AND THE SOL-GEL METHODS

被引：20

作者：

BOSCH, P ^{[1
]}

LOPEZ, T ^{[1
]}

LARA, VH ^{[1
]}

GOMEZ, R ^{[1
]}

机构：

[1] UNIV AUTONOMA METROPOLITANA IZTAPALAPA,DEPT CHEM,POB 55-534,MEXICO CITY 09340,DF,MEXICO

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1993年 / 80卷 / 03期

关键词：

HYDROGENATION; IMPREGNATION; PHENYLACETYLENE; PLATINUM; SILICA; SOL GEL PREPARATION;

D O I：

10.1016/0304-5102(93)85004-D

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A comparative study of Pt/SiO2 catalysts prepared by impregnation or by the sol-gel method is reported. The catalysts were characterized by chemisorption, electron microscopy and X-ray diffraction studies. The results showed that metallic particles (35 angstrom) in sol-gel catalyst, are particles coming out from the support. These ''emerged particles'', in phenylacetylene hydrogenation, act like ultrahighly dispersed particles.

引用

页码：299 / 306

页数：8

共 50 条

[21] Sol-gel SiO2 coatings doped with Nd2O3 [J].

Yordanov, S. I. ;

Stambolova, I. D. ;

Lakov, L. I. ;

Blaskov, V. N. ;

Jivov, B. T. ;

Aleksandrova, M. K. ;

Valkanov, S. T. ;

Eliyas, A. E. .

BULGARIAN CHEMICAL COMMUNICATIONS, 2017, 49 :29-32

[22] The properties of nickel aluminate nanoparticles prepared by sol-gel and impregnation methods [J].

Komeili, Samane ;

Taeb, Abbas ;

Ravanchi, Maryam Takht ;

Fard, Maryam Rahimi .

RESEARCH ON CHEMICAL INTERMEDIATES, 2016, 42 (12) :7909-7921

[23] Preparation of Barrier SiO2 Coating on Carbon Fibers by the Sol-Gel Method [J].

Gallyamova, Rida ;

Galyshev, Sergei ;

Musin, Fanil .

MATERIALS TODAY-PROCEEDINGS, 2019, 11 :286-289

[24] SOL-GEL PREPARATION OF COMPOSITES OF POLY(DIMETHYLSILOXANE) WITH SIO2 AND SIO2/TIO2 AND THEIR MECHANICAL-PROPERTIES [J].

WEN, JY ;

MARK, JE .

POLYMER JOURNAL, 1995, 27 (05) :492-502

[25] Characterization and catalytic performance of sol-gel derived Cu/SiO2 catalysts for hydrogenolysis of diethyl oxalate to ethylene glycol [J].

He, Liming ;

Chen, Xiaochun ;

Ma, Jingsheng ;

He, Hailong ;

Wang, Wei .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2010, 55 (03) :285-292

[26] Surface structure and catalytic behavior of silica-supported copper catalysts prepared by impregnation and sol-gel methods [J].

Wang, ZL ;

Liu, QS ;

Yu, JF ;

Wu, TH ;

Wang, GJ .

APPLIED CATALYSIS A-GENERAL, 2003, 239 (1-2) :87-94

[27] Preparation and characterization of epoxy/SiO2 nanocomposites by cationic photopolymerization and sol-gel process [J].

Bi, Yu-Tie ;

Li, Zhen-Jiang ;

Liang, Wei .

POLYMERS FOR ADVANCED TECHNOLOGIES, 2014, 25 (02) :173-178

[28] Synthesis and characterization of ATO/SiO2 nanocomposite coating obtained by sol-gel method [J].

Chen, XC .

MATERIALS LETTERS, 2005, 59 (10) :1239-1242

[29] NiTiO3 nanoparticles encapsulated with SiO2 prepared by sol-gel method [J].

Lopes, K. P. ;

Cavalcante, L. S. ;

Simoes, A. Z. ;

Goncalves, R. F. ;

Escote, M. T. ;

Varela, J. A. ;

Longo, E. ;

Leite, E. R. .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2008, 45 (02) :151-155

[30] Investigation of the Protective Properties of SiO2 Coatings for Carbon Fibers by the Sol-Gel Method [J].

Gallyamova, R. F. ;

Galyshev, S. N. ;

Badamshin, A. G. ;

Musin, F. F. ;

Dokichev, V. A. .

MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2018), 2018, 2053

← 1 2 3 4 5 →