Ethylene epoxidation in low-temperature AC corona discharge over Ag catalyst: Effect of promoter

被引：10

作者：

Sreethawong, Thammanoon ^{[1
,2
]}

Suwannabart, Thanapoom ^{[1
]}

Chavadej, Sumaeth ^{[1
,2
]}

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

[2] Chulalongkorn Univ, Ctr Petr Petrochem & Adv Mat, Bangkok 10330, Thailand

来源：

CHEMICAL ENGINEERING JOURNAL | 2009年 / 155卷 / 1-2期

关键词：

Epoxidation; Ethylene oxide; Corona discharge; Ag catalyst; Promoter; SILVER BIMETALLIC CATALYSTS; ALUMINA-SUPPORTED SILVER; BED MEMBRANE REACTOR; ALLOY CATALYSTS; OXIDATION; CS; OXYGEN; AU; SELECTIVITY; CHEMISTRY;

D O I：

10.1016/j.cej.2009.07.056

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, the epoxidation of ethylene using a low-temperature corona discharge system was investigated with various reported catalytically active catalysts: Ag/alpha-Al2O3, Cs-Ag/alpha-Al2O3, Cu-Ag/alpha-Al2O3, and Au-Ag/alpha-Al2O3. It was experimentally found that the investigated catalysts could improve the ethylene conversion and the ethylene oxide (EO) yield and selectivity for the corona discharge system, particularly 1 wt.% Cs-12.5 wt.% Ag/alpha-Al2O3 and 0.2 wt.% Au-12.5 wt.% Ag/alpha-Al2O3. The power consumption per EO molecule produced in the corona discharge system, combined with the superior bimetallic catalysts, was much lower than that of the sole corona discharge system and that of the corona discharge system combined with the monometallic Ag catalyst. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：396 / 403

页数：8

共 30 条

[1] Study of the active phase of silver catalysts for ethylene epoxidation
Amorim de Carvalho, Marta C. N.
Passos, Fabio B.
Schmal, M.
[J]. JOURNAL OF CATALYSIS, 2007, 248 (01) : 124 - 129
[2] Epoxidation of ethylene over silver catalysts supported on α-alumina crystal carriers
Ayame, A
Uchida, Y
Ono, H
Miyamoto, M
Sato, T
Hayasaka, H
[J]. APPLIED CATALYSIS A-GENERAL, 2003, 244 (01) : 59 - 70
[3] CHAVADEJ S, 2008, MECH HOMOGENEOUS HET, P283
[4] Ethylene Epoxidation over Alumina-Supported Silver Catalysts in Low-Temperature AC Corona Discharge
Chavadej, Sumaeth
Tansuwan, Anothai
Sreethawong, Thammanoon
[J]. PLASMA CHEMISTRY AND PLASMA PROCESSING, 2008, 28 (05) : 643 - 662
[5] Rhenium promotion of Ag and Cu-Ag bimetallic catalysts for ethylene epoxidation
Dellamorte, J. C.
Lauterbach, J.
Barteau, M. A.
[J]. CATALYSIS TODAY, 2007, 120 (02) : 182 - 185
[6] ELISSON B, 1991, IEEE T PLASMA SCI, V19, P1063
[7] Study of Cs-promoted, alpha-alumina-supported silver, ethylene-epoxidation catalysts .4. Model study
Epling, WS
Hoflund, GB
Minahan, DM
[J]. JOURNAL OF CATALYSIS, 1997, 171 (02) : 490 - 497
[8] A STUDY OF THE VAPOR-PHASE EPOXIDATION OF PROPYLENE AND ETHYLENE ON SILVER AND SILVER GOLD ALLOY CATALYSTS
GEENEN, PV
BOSS, HJ
POTT, GT
[J]. JOURNAL OF CATALYSIS, 1982, 77 (02) : 499 - 510
[9] SIZE EFFECTS IN ETHYLENE OXIDATION ON SILVER CATALYSTS - INFLUENCE OF SUPPORT AND CS PROMOTER
GONCHAROVA, SN
PAUKSHTIS, EA
BALZHINIMAEV, BS
[J]. APPLIED CATALYSIS A-GENERAL, 1995, 126 (01) : 67 - 84
[10] HERRERA R, 1990, STUD SURF SCI CATAL, V55, P717

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