Effect of alkali and alkaline earth metal on Co/CeO2 catalyst for the water gas shift reaction of waste derived synthesis gas

被引：52

作者：

Lee, Yeol-Lim ^{[1
]}

Jha, Ajay ^{[1
]}

Jang, Won-Jun ^{[1
]}

Shim, Jae-Oh ^{[1
]}

Rode, Chandrashekhar V. ^{[2
]}

Jeon, Byong-Hun ^{[3
]}

Bae, Jong Wook ^{[4
]}

Roh, Hyun-Seog ^{[1
]}

机构：

[1] Yonsei Univ, Dept Environm Engn, 1 Yonseidae Gil, Wonju 26493, Gangwon, South Korea

[2] Natl Chem Lab, CSIR, Chem Engn & Proc Dev Div, Pune 411008, Maharashtra, India

[3] Hwsyang Univ, Dept Nat Resources & Environm Engn, 222 Wangsimni Ro, Seoul 04763, South Korea

[4] Sungkyunkwan Univ SKKU, Sch Chem Engn, 2066 Seobu Ro, Suwon 16419, Gyeonggi, South Korea

来源：

APPLIED CATALYSIS A-GENERAL | 2018年 / 551卷

基金：

新加坡国家研究基金会;

关键词：

Waste derived synthesis gas; High temperature water-gas shift; Alkaline earth metal; Co/CeO2; Stability; Sintering resistance; OXIDE CATALYSTS; MIXED OXIDES; DOPED CERIA; CO RATIOS; LOW STEAM; IN-SITU; COBALT; XPS; HYDROGEN; CO3O4;

D O I：

10.1016/j.apcata.2017.12.009

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：

We prepared a series of alkali (Na and K) and alkaline earth metal (Ca and Ba) promoted Co/CeO2 catalysts to investigate the effect of the promoter on the catalytic performance of the catalyst in the high-temperature water gas shift (WGS) reaction of waste derived synthesis gas. Interestingly, alkali metal promoted catalysts deactivated rapidly compared to alkaline earth metal promoted catalysts. Alkaline earth metal promoted catalysts showed relatively higher stability (>50 h) even at a very high gas hourly space velocity of 143,000 h(-1). X-ray diffraction (XRD) and transmission electron microscopy (TEM) results reveal that the higher stability of the alkaline earth metal promoted catalysts was due to the strong resistance to sintering, showing a relatively small crystallite size of metallic cobalt compared to the alkali metal promoted catalysts after WGS reaction.

引用

页码：63 / 70

页数：8

共 49 条

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