氧化铝载体表面酸性对铂铼重整催化剂催化性能的影响  

EFFECTS OF THE SURFACE ACIDITY OF ALUMINA SUPPORT ON THE CATALYTIC PROPERTY OF Pt-Re REFORMING CATALYST

作　　者：张迪倡[1] 戚杰[1] 杜崇敬[1] 孙作霖[1] 

机构地区：[1]石油化工科学研究院

出　　处：《石油学报（石油加工）》1993年第1期34-40,共7页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：用氨吸附微量量热技术对Al_2O_3载体和铂铼重整催化剂的表面酸性进行了表征.以正庚烷为原料,在加压连续微反装置上考察了催化剂的加氢裂解和异构化性能;以石脑油(沸程77～155℃)为原料,在临氢中型装置上考察了催化剂的选择性.对催化剂及其载体的酸性功能与催化剂的活性和选择性之间的关系,以及氯在催化剂中的作用和氯含量对催化剂酸性的影响等方面进行了分析和关联.实验结果表明,不同原料、不同制备条件所得到的各种Al_2O_3载体,以及用这些载体制成的催化剂,具有不同的酸强度和酸量;酸性的差别在催化剂重整反应性能方面显示出与酸性变化相类似的规律性.The surface acidity of Al_2O_3 supports as well as several Pt-Re reforming catalysts was characterized by means of a modified microcalorimetry method combined with ammonia adsorption. The hydrocracking and isomerization activity of samples were tested on a conti nueous flow microreactor using n-heptane as reactant. The selectivity was evaluated on a pilot reactor using naphtha (B. P. 77～155℃)as feedstock. The acidity of the catalysts and their supports can be correlated with activity and selectivity of those samples. The effect of chlorine content in catalysts on acidity was also examined and discussed.

关 键 词：重整催化剂 氧化铝 载体 表面酸性 

分 类 号：TE624.92[石油与天然气工程—油气加工工程]