Highly efficient porous Ni/SiO2 catalysts prepared by electrospinning method for CO methanation

被引：0

作者：

He L. ^{[1
]}

Xin Z. ^{[1
,2
]}

Gao W. ^{[1
]}

Gu J. ^{[1
]}

Meng X. ^{[1
]}

机构：

[1] Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai

[2] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai

来源：

Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 11期

关键词：

Catalyst; CO methanation; Electrospinning; Preparation; Silica;

D O I：

10.11949/0438-1157.20200251

中图分类号：

学科分类号：

摘要：

Porous Ni/SiO2 catalysts were prepared by electrospinning using P123 as template and the catalytic performance in CO methanation was evaluated. The synthesized catalyst was characterized by N2 physisorption measurements, scanning electron microscopy (SEM), X-ray diffraction (XRD), hydrogen temperature-programmed reduction (H2-TPR), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The results showed that Ni particles were highly dispersed on the silica nanofibers. The presence of pore structure in electrospun fibers immensely increased the specific surface area. Moreover, the porous Ni/SiO2 catalyst exhibited small particle size and strong metal-support interaction, which led to excellent catalytic activity with 96.4% CO conversion and 86.4% CH4 selectivity at 450 °C under 0.1 MPa with a WHSV of 15000 ml/(g•h). The 100-hour lifetime test indicated that the porous Ni/SiO2 catalyst had excellent stability. This method provides a new idea for the industrial preparation of methanation catalysts with high catalytic activity and without secondary molding. © 2020, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：5007 / 5015

页数：8

共 31 条

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