Catalytic degradation of medium density polyethylene over silica-alumina supports

被引:66
作者
Ochoa, R
VanWoert, H
Lee, WH
Subramanian, R
Kugler, E
Eklund, PC
机构
[1] UNIV KENTUCKY,DEPT PHYS & ASTRON,LEXINGTON,KY 40511
[2] W VIRGINIA UNIV,DEPT CHEM ENGN,MORGANTOWN,WV 26506
关键词
catalytic degradation; silica-alumina catalysts; medium density polyethylene;
D O I
10.1016/S0378-3820(96)01055-7
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A series of amorphous silica-alumina catalysts with similar surface area has been prepared by sol-gel chemistry, We report the results of a study of the role of catalyst acidity on the distribution and quality of the products obtained from the degradation of medium density polyethylene (MDPE). The activity of these catalysts was evaluated with and without a hydrogen donor solvent (tetralin), under high hydrogen pressure (5.5 MPa) and moderate temperatures (653-723 K). It was found that the production of oils from the conversion of MDPE correlated with the Bronsted acidity and not with the total acidity of the catalysts. The presence of the hydrogen donor solvent inhibited the activity of the catalysts and lead to an increase in the molecular weight of the oils.
引用
收藏
页码:119 / 136
页数:18
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