文献类型：期刊文献

中文题名：原位红外研究噻吩在硫化后Co-Mo/γ-Al2O3催化剂上吸附行为

英文题名：Adsorption behavior of thiophene on Co-Mo/γ-Al2O3 catalyst by in-situ IR

作者：陈俊霖[1];赵基钢[1];江洪波[1];陈文斌[2];秦康[2];沈本贤[1]

机构：[1]华东理工大学化工学院,绿色能源化工国际联合研究中心,上海200237;[2]中国石化石油化工科学研究院,北京100083

年份：2020

卷号：39

期号：S02

起止页码：221

中文期刊名：化工进展

外文期刊名：Chemical Industry and Engineering Progress

收录：CSTPCD;;EI(收录号：20222312196524);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家重点研发计划(2017YFB0306600)。

语种：中文

中文关键词：加氢脱硫;催化剂;吸附;噻吩;Co-Mo/γ-Al_2O_3;原位红外;硫化

外文关键词：HDS;catalyst;adsorption;thiophene;Co-Mo/γ-Al2O3;in-situ IR;sulfurization

摘要：在原油质量下降的趋势和柴油硫含量标准不断提升的背景下,为提升加氢脱硫催化剂催化活性及改进清洁油品的生产工艺,本文采用原位红外技术研究工业用直接脱硫路径活性较高的Co-Mo/γ-Al2O3催化剂的硫化行为和噻吩的吸附行为。实验结果表明,Co-Mo/γ-Al2O3催化剂的表面在约320℃硫化,噻吩在硫化后的Co-Mo/γ-Al2O3催化剂上原位升温脱附的过程中,噻吩的C C伸缩振动峰(1558cm-1)和C H面内弯曲振动峰(1413cm-1)在约250℃消失(对应π络合吸附);C C伸缩振动峰(1679、1575cm-1)和C H面内弯曲振动峰(1396cm-1)在约350℃消失(对应M-S吸附);而C C伸缩振动峰(1537、1513cm-1)和C H面内弯曲振动峰(1338cm-1)持续增强(对应π络合吸附)。这明晰了噻吩的吸附方式与其脱附温度之间的关系,为新型加氢脱硫催化剂的设计开发提供了试验数据支持。
Against the background of declining heavy oil quality and rising diesel sulfur standards,in order to improve hydrodesulfurization catalysts and production processes,the in-situ IR was used to study the sulfurization behavior of Co-Mo/γ-Al2O3 catalyst whose industrial direct desulfurization activity is higher and adsorption behavior of thiophene.Co-Mo/γ-Al2O3 catalyst surface was sulfided at 320℃,and during thiophene-temperature programmed desorption on sulfided catalyst,the thiophene adsorption characteristic peaks at 1558cm-1(C C vibration)and 1413cm-1(C H vibration)disappeared at 250℃(πcomplex adsorption);peaks at 1679,1575cm-1(C C vibration)and 1396cm-1(C H vibration)disappeared at 350℃(M-S adsorption),but peaks at 1537cm-1,1513cm-1(C C vibration)and 1338cm-1(C H vibration)strengthened(πcomplex adsorption).This clarifies the relationship between adsorption mode and desorption temperature of thiophene,which provides experimental data support for the design and development of higher activity catalysts.