Effects of Multiple Promotion of the Direct Synthesis Contact Mass with P, Zn, and Sn on the Synthesis of Methylchlorosilanes

被引：31

作者：

Gordon, Alexander D. ^{[1
]}

Hinch, B. J. ^{[2
]}

Strongin, Daniel R. ^{[1
]}

机构：

[1] Temple Univ, Dept Chem, Philadelphia, PA 19122 USA

[2] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA

来源：

CATALYSIS LETTERS | 2009年 / 133卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Direct synthesis; Rochow reaction; Methylchlorosilane; Infrared spectroscopy; THERMAL CHEMISTRY; CATALYTIC FORMATION; CH3; DIFFUSION; PHASE; CU;

D O I：

10.1007/s10562-009-0172-z

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：

The Direct Synthesis, or Rochow Synthesis, involves the reaction of methyl chloride, CH3Cl (MeCl), with Cu-Si contact masses (promoted with 1-2% of Zn, Sn, and P) to form methylchlorosilanes. Flow reactor studies (1 bar MeCl at 300 A degrees C) showed that contact masses promoted with Zn, Sn, and P (triply promoted) demonstrated the highest Si and MeCl conversion at early reaction times. In situ infrared spectroscopy suggested that in contrast to the doubly promoted catalysts (where CH3 groups were primarily bound to Si), surface CH3 showed appreciable binding to the copper component of the triply promoted contact mass. This change in surface composition ultimately led to a drop in reactivity and selectivity of the triply promoted catalyst.

引用

页码：14 / 22

页数：9

共 25 条

[1] VIBRATIONAL STUDIES OF CH3I ON SI(100)-(2X1) - ADSORPTION AND DECOMPOSITION OF THE METHYL SPECIES [J].

COLAIANNI, ML ;

CHEN, PJ ;

GUTLEBEN, H ;

YATES, JT .

CHEMICAL PHYSICS LETTERS, 1992, 191 (06) :561-568

[2]

Ehrich H, 1997, APPL ORGANOMET CHEM, V11, P237

[3] INTERACTION OF COPPER-CATALYSTS AND SI(100) FOR THE DIRECT SYNTHESIS OF METHYLCHLOROSILANES [J].

FLOQUET, N ;

YILMAZ, S ;

FALCONER, JL .

JOURNAL OF CATALYSIS, 1994, 148 (01) :348-368

[4] CATALYTIC FORMATION OF SILANES ON COPPER SILICON ALLOYS [J].

FRANK, TC ;

KESTER, KB ;

FALCONER, JL .

JOURNAL OF CATALYSIS, 1985, 91 (01) :44-53

[5]

Gasper-Galvin L.D., 1993, STUDIES ORGANIC CHEM, V49, P279

[6] Cl2 surface chemistry on Cu/Si(100):: an ISS, XPS, and TPD study [J].

Gheyas, SI ;

Strable, BL ;

Strongin, DR ;

Wright, AP .

SURFACE SCIENCE, 2001, 474 (1-3) :129-138

[7] Effects of individual promoters on the Direct Synthesis of methylchlorosilanes [J].

Gordon, Alexander D. ;

Hinch, B. J. ;

Strongin, Daniel R. .

JOURNAL OF CATALYSIS, 2009, 266 (02) :291-298

[8] Thermal chemistry of CH3 on Si/Cu(100) [J].

Han, J ;

Gheyas, SI ;

Wang, Y ;

Strongin, DR ;

Graham, AP ;

Hinch, BJ ;

Wright, AP .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (14) :3078-3084

[9] CH3 and Cl2 coadsorbed on Si/Cu(100) [J].

Han, J ;

Gheyas, SI ;

Strongin, DR ;

Hinch, BJ ;

Wright, AP .

CATALYSIS LETTERS, 2000, 68 (3-4) :147-152

[10] Thermal chemistry of chlorine on Si/Cu(100) [J].

Han, J ;

Gheyas, SI ;

Wang, Y ;

Strongin, DR ;

Hinch, BJ ;

Wright, AP .

LANGMUIR, 2000, 16 (16) :6541-6545

← 1 2 3 →