CAJ | 학술논문

以水溶性Ni盐溶液为前体,制备了Ni液溶胶催化剂.考察了Ni液溶胶催化剂和水溶性Ni催化剂在原料油中的分散状况,对催化渣油加氢裂化反应后2种催化剂的状态进行了SEM、XPS和激光粒度表征.结果表明,Ni液溶胶催化剂比水溶性Ni催化剂在原料油中分散颗粒度小,比表面积大,分散均匀.在催化渣油加氢裂化反应后,Ni液溶胶催化剂和水溶性Ni催化剂中的Ni元素主要以Ni~(2+)的形式存在,S主要以S~(2+)和S6~(6+)2种形式存在,Ni液溶胶催化剂在反应后无明显团聚现象.2种催化剂存在下渣油加氢裂化反应生焦数据表明,Ni液溶胶催化剂比水溶性Ni催化剂具有更高的抑制生焦活性.
이수용성Ni염용액위전체,제비료Ni액용효최화제.고찰료Ni액용효최화제화수용성Ni최화제재원료유중적분산상황,대최화사유가경열화반응후2충최화제적상태진행료SEM、XPS화격광립도표정.결과표명,Ni액용효최화제비수용성Ni최화제재원료유중분산과립도소,비표면적대,분산균균.재최화사유가경열화반응후,Ni액용효최화제화수용성Ni최화제중적Ni원소주요이Ni~(2+)적형식존재,S주요이S~(2+)화S6~(6+)2충형식존재,Ni액용효최화제재반응후무명현단취현상.2충최화제존재하사유가경열화반응생초수거표명,Ni액용효최화제비수용성Ni최화제구유경고적억제생초활성.
The Ni colloidal sol catalyst and water-soluble Ni catalyst were synthesized, which were also symbolized by use of microscope, SEM, TEM, XPS and LS granularity analyzing apparatus after being used in the slurry bed hydrocracking of residua.It was indicated that the average particle size of the Ni colloidal sol catalyst was smaller but the surface area was bigger than those of water-soluble Ni catalyst.After catalytic hydrocracking of residue the element Ni in the two catalysts existed as Ni~(2+) and the element S existed as S~(2+) and S~(6+) , and there was no particle agglomeration phenomenon in Ni colloidal sol catalyst.Compared with water-soluble Ni catalyst, the Ni colloidal sol catalyst could restrain coke forming more effectively.