Vapor phase hydrofluorination of acetylene to vinyl fluoride over La2O3-Al2O3 catalysts

被引：13

作者：

Bi, Qing-Yuan ^{[1
]}

Qian, Lin ^{[1
]}

Xing, Li-Qiong ^{[1
]}

Tao, Li-Ping ^{[1
]}

Zhou, Qiang ^{[2
]}

Lu, Ji-Qing ^{[1
]}

Luo, Meng-Fei ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Inst Phys Chem, Zhejiang Key Lab React Chem Solid Surfaces, Jinhua 321004, Peoples R China

[2] Res Ctr Natl Fluoride Mat, Juhua Grp Engn Technol, Quzhou 324004, Peoples R China

来源：

JOURNAL OF FLUORINE CHEMISTRY | 2009年 / 130卷 / 06期

基金：

美国国家科学基金会;

关键词：

Hydrofluorination; Vinyl fluoride; La2O3-Al2O3; catalyst; Coke deposition; Acidic sites; OXIDE CATALYSTS; METHANE; SURFACE; COMBUSTION; CERIUM; NI; ETHYLBENZENE; LANTHANUM; ACIDITY;

D O I：

10.1016/j.jfluchem.2009.03.001

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of La-doped Al2O3 catalysts were prepared and tested for the vapor phase hydrofluorination of C2H2 to vinyl fluoride (CH2CHF, VF). It was found that the La-doped catalyst gave a stable catalytic performance and a higher selectivity to the desired VF and a lower selectivity to coke deposition compared with the pure Al2O3 catalyst. The enhancement in VF selectivity on the La-doped catalyst was due to the elimination of acidic sites on the Al2O3 surface by the addition of La2O3, evidenced by NH3-TPD results, which could also explain the declined selectivity to coke deposition on the catalyst. Raman result indicated there were two different vibration forms of C-H distortion and C=C expansion for the coke deposition. Crown Copyright (c) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：528 / 533

页数：6

共 31 条

[1] The effects of La2O3 on the structural properties of La2O3-Al2O3 prepared by the sol-gel method and on the catalytic performance of Pt/La2O3-Al2O3 towards steam reforming and partial oxidation of methane [J].

Araujo, J. C. S. ;

Zanchet, D. ;

Rinaldi, R. ;

Schuchardt, U. ;

Hori, C. E. ;

Fierro, J. L. G. ;

Bueno, J. M. C. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 84 (3-4) :552-562

[2] Structuration of LaMnO3 perovskite catalysts on ceramic and metallic monoliths:: Physico-chemical characterisation and catalytic activity in methane combustion [J].

Arendt, E. ;

Maione, A. ;

Klisinska, A. ;

Sanz, O. ;

Montes, M. ;

Suarez, S. ;

Blanco, J. ;

Ruiz, P. .

APPLIED CATALYSIS A-GENERAL, 2008, 339 (01) :1-14

[3] Ethanol combustion over strontium- and cerium-doped LaCoO3 catalysts [J].

Bialobok, Beata ;

Trawczynski, Janusz ;

Mista, Wlodzimierz ;

Zawadzki, Miroslaw .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 72 (3-4) :395-403

[4] Stabilization of CuZSM-5 NOx reduction catalysts with lanthanum [J].

Budi, P ;

CurryHyde, E ;

Howe, RF .

CATALYSIS LETTERS, 1996, 41 (1-2) :47-53

[5] Preparation and characterisation of supported La0.8Sr0.2MnO3+x [J].

Burch, R ;

Harris, PJF ;

Pipe, C .

APPLIED CATALYSIS A-GENERAL, 2001, 210 (1-2) :63-73

[6] LARGE ENHANCEMENT IN METHANE-TO-SYNGAS CONVERSION ACTIVITY OF SUPPORTED NI CATALYSTS DUE TO PRECOATING OF CATALYST SUPPORTS WITH MGO, CAO OR RARE-EARTH-OXIDE [J].

CHOUDHARY, VR ;

UPHADE, BS ;

MAMMAN, AS .

CATALYSIS LETTERS, 1995, 32 (3-4) :387-390

[7] Methane combustion on perovskites-based structured catalysts [J].

Cimino, S ;

Lisi, L ;

Pirone, R ;

Russo, G ;

Turco, M .

CATALYSIS TODAY, 2000, 59 (1-2) :19-31

[8] The effect of fluorine on the phase equilibria in the lanthanum-aluminum-oxygen system [J].

Fergus, JW .

JOURNAL OF FLUORINE CHEMISTRY, 1996, 78 (01) :83-86

[9]

HAMERSMA JW, 1971, Patent No. 3621067

[10]

HEDGE TE, 1967, Patent No. 3317619

← 1 2 3 4 →