石油化工2011，Vol.40Issue(11)：1177-1183,7.
新型介孔 Ni/TiO2-Al2O3催化剂的表征及其用于选择加氢反应
Characterization of a New Mesoporous Ni/TiO2-Al2O3 Catalyst and Its Application in Selective Hydrogenation
商宜美 1柴忠义 2纪玉国 2栗同林 2李建伟2
作者信息
- 1. 北京化工大学化工资源有效利用国家重点实验室,北京100029
- 2. 中国石化北京化院燕山分院,北京102500
- 折叠
摘要
Abstract
Ni/TiO2-Al2O3 catalyst used in the first-stage selective hydrogenation of pyrolysis gasoline was prepared and characterized by means of XRD, SEM, N2 adsorption-desorption, XPS and pyridine adsorbed FTIR. The activity and stability of the catalyst for the hydrogenation was evaluated in an isothermal continuous flow reactor. The results showed that TiO2 and AI2O3 in the support and Ni in the catalyst existed in the forms of anatase, γ-Al2O3 and NiO respectively. Chemical shift between TiO2 and Ni took place because of their synergistic action, which improved dispersity of the active metal component on the support and enhanced the hydrogenation activity for the diolefins. TiO2-Al2O3 composite support had appropriate pore distribution and well-developed mesoporous structure, which kept the skeleton of Al2O3 and developed catalytic performance of TiO2 in the hydrogenation. Both B acid and L acid centers with weak and medium acid strength existed on the support surface. In the pilot-scale evaluation test, the diene value and bromine value ( per 100 g feedstock oil) of the hydrogenation products were less than 8.0 g and less than 21 g respectively. All the catalytic activity, selectivity and stability of Ni/TiO2-Al2O3 catalyst for the selective hydrogenation were high.关键词
裂解汽油/一段选择加氢/镍催化剂/氧化钛-氧化铝复合载体Key words
pyrolysis gasoline/ first-stage selective hydrogenation/ nickel catalyst/ titania-alumina composite support分类
化学化工引用本文复制引用
商宜美,柴忠义,纪玉国,栗同林,李建伟..新型介孔 Ni/TiO2-Al2O3催化剂的表征及其用于选择加氢反应[J].石油化工,2011,40(11):1177-1183,7.
