1. MgAl-LDO mixed oxide derived from layered double hydroxide: A potential support for CoMo sulfur-resistant water–gas shift catalyst
- Author
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Jianjun Chen, Lilong Jiang, Jinxing Mi, Zhixin Lan, and Yanning Cao
- Subjects
Sulfide ,Inorganic chemistry ,chemistry.chemical_element ,02 engineering and technology ,engineering.material ,010402 general chemistry ,01 natural sciences ,Catalysis ,Water-gas shift reaction ,law.invention ,chemistry.chemical_compound ,law ,Calcination ,chemistry.chemical_classification ,Process Chemistry and Technology ,Layered double hydroxides ,General Chemistry ,021001 nanoscience & nanotechnology ,Sulfur ,0104 chemical sciences ,chemistry ,engineering ,Mixed oxide ,Hydroxide ,0210 nano-technology - Abstract
A series of Mg–Al layered double oxides (MgAl-LDOs) with different Mg/Al molar ratios (Mg/Al = 3–6) was synthesized by calcination of Mg–Al layered double hydroxides, and further used to prepare CoMo water–gas shift (WGS) catalysts by incipient-wetness impregnation method. The as-synthesized CoMo/MgAl-LDO catalysts were investigated by systematically physicochemical characterizations. The CoMo/MgAl-LDO (Mg/Al = 5) catalyst showed much higher catalytic activity than a commercial CoMo/MgAl2O4 catalyst, indicating the MgAl-LDOs can be a potential support for the CoMo catalyst. H2-TPR and H2S-TPS studies suggest that the Mo species are easier to be reduced and thus more sulfide phases are formed on CoMo/MgAl-LDO (Mg/Al = 5) catalyst.
- Published
- 2016
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