Ethanol Dry Reforming over Ce Modified Ni/KIT-6 Catalyst

化学工业与工程

Chemcial Industry and Engineering

2020, Vol. 37

Issue (6) :10-17 DOI: 10.13353/j.issn.1004.9533.20200305

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Ethanol Dry Reforming over Ce Modified Ni/KIT-6 Catalyst

Wei Yichen^1,2, Cai Weijie¹, Tan Fengzhi¹, Liu Xianyun²

1. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Liaoning Dalian 116034, China;
2. Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, Henan Jiaozuo 454000, China

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Abstract The Ce modified KIT-6 carrier was prepared by "one-pot method", and the supported Ni/Ce-KIT-6 and Ni/KIT-6 catalysts were synthesized by methanol-assisted impregnation method. BET, SEM, TEM, H₂-TPR, XRD and Raman spectroscopy were performed to analyze the physical and chemical properties of the catalyst. The results show that the doping of the additive Ce can inhibit the sintering of the active metal Ni during the calcination process, but improve the dispersion of the active component Ni and the interaction between the metal and the carrier. The effect of doping of Ce on the performance of Ni/KIT-6 catalyst in ethanol dry gas reforming was further investigated. The results show that doping of Ce is beneficial to improve the activity and stability of the Ni-based catalyst; the conversions of ethanol and CO₂ catalyzed by Ni/Ce-KIT-6 catalyst are higher than that by the undoped Ni/KIT-6 catalyst, and the selectivity for hydrogen and CO are high. In the 60-hour continuous stability test, the Ni/Ce-KIT-6 catalyst was not deactivated, and there was no significant carbon deposition on the catalyst surface. The redox capability of Ce additives can effectively activate CO₂ molecules, provide active oxygen atoms, realize the dynamic elimination of carbon deposited on the catalyst surface, and improve the stability of the catalyst.

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	Wei Yichen
	Cai Weijie
	Tan Fengzhi
	Liu Xianyun

Keywords： Ni； KIT-6； ethanol； dry gas reforming； syngas

Received 2020-03-07;

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Wei Yichen, Cai Weijie, Tan Fengzhi, Liu Xianyun.Ethanol Dry Reforming over Ce Modified Ni/KIT-6 Catalyst[J] Chemcial Industry and Engineering, 2020,V37(6): 10-17

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