当前位置: X-MOL 学术ChemistrySelect › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Methanation Performance of Unsupported MoP Catalysts Prepared with Phytic Acid under Low H2/CO
ChemistrySelect ( IF 2.1 ) Pub Date : 2020-07-03 , DOI: 10.1002/slct.202002029
Baowei Wang 1 , Yu Wang 1 , Jun Zhao 1 , Zhenhua Li 1 , Yan Xu 1 , Xinbin Ma 1
Affiliation  

In this paper, using phytic acid as the precursor, the effects of the reduction temperature and post‐treatment conditions on the methanation performance of unsupported MoP catalysts were investigated. The synthesis mechanism and structure‐activity relationship of the catalyst were investigated by correlation characterization, such as N2 adsorption‐desorption, XRD, Raman analysis, element analysis and XPS. At the reduction temperature of 650 °C, MoP catalysts showed the higher methanation activity due to its smaller crystallite size and large specific surface area. After H2 post‐treatment at 750 °C, the CO conversion increased by 16.2% because of the higher specific surface area and lower contents of the carbon and phosphorus species in MoP‐750‐H. The MoP‐750‐H catalysts show good stability without H2S. The sulfur‐resistant methanation tests indicated that the inactivation of the catalysts was more serious with the higher H2S concentration, due to the sulfidation from MoP to MoS2.

中文翻译:

低H2 / CO下植酸制得的无载体MoP催化剂的甲烷化性能

本文以植酸为前驱体,研究了还原温度和后处理条件对无载体MoP催化剂甲烷化性能的影响。通过相关表征,如N 2吸附-解吸,XRD,拉曼分析,元素分析和XPS,研究了催化剂的合成机理和构效关系。在650°C的还原温度下,MoP催化剂由于其较小的微晶尺寸和较大的比表面积而显示出较高的甲烷化活性。H 2之后在750°C下进行后处理,由于MoP‐750‐H中较高的比表面积以及较低的碳和磷种类含量,CO转化率提高了16.2%。MoP‐750‐H催化剂在没有H 2 S的情况下显示出良好的稳定性。抗硫的甲烷化试验表明,由于MoP硫化成MoS 2,随着H 2 S浓度的升高,催化剂的失活更加严重。
更新日期:2020-07-03
down
wechat
bug