Impact Factor:

7.139

DOI number:

10.1016/j.ijhydene.2018.09.059

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

材料科学与工程系

Journal:

International Journal of Hydrogen Energy

Funded by:

重庆市科技局

Key Words:

Ni/KIT-6 catalysts；Ordered mesoporous structure；Methane；Carbon dioxide；Catforming；Syngas

Abstract:

The ordered mesoporous Ni/KIT-6 (KIT-6, an ordered mesoporous SiO2) catalysts were prepared by impregnation method for carbon dioxide reforming of methane. The physicochemical properties of the prepared catalysts were characterized by H2-TPR, XRD, BET, and TEM. The research results show that the specific surface area, pore diameter, crystal size of Ni species, and catalytic performance of the Ni/KIT-6 catalysts are obviously affected by the Ni content. Increasing Ni content results in the increment of the crystal size of Ni species, while the dispersion of Ni species shows the opposite trend. The specific surface area and pore size of the Ni/KIT-6 catalyst with the Ni loading of 3 wt% were 493.3 m2 g−1 and 6.22 nm, respectively. Besides, the Ni species are highly dispersed on the surface of KIT-6 support. Thereby, it exhibits the superior catalytic performance of carbon dioxide reforming of methane to syngas (CO and H2). At atmospheric pressure, the CO2 and CH4 conversions for each catalyst following the order: NK3 ≈ NK4 > NK5 > NK2 > NK1 > bulk Ni. When the reaction temperature is 600 °C, the conversions of CH4 and CO2 of the NK3 catalyst are 65.1% and 37.0%, respectively. Meanwhile, it also shows excellent stability.

First Author:

Deping Xia

Co-author:

Ying Chen,Chunnan Li,Chendi Liu

Indexed by:

源刊论文

Correspondence Author:

Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

43

Issue:

45

Page Number:

20488–20499

Translation or Not:

no

Date of Publication:

2018-11-08

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1016/j.ijhydene.2018.09.059