TY - JOUR
AU - Nefedov, B.
AB - 


1.

Investigation of the catalytic activity of different types of silicagels in polymerization of isobutylene at 190° and atmospheric pressure showed that fine types (ASM, KSM and particularly ShSM) and, to a lesser extent, only one coarse silicagel (KSK) are active.



2.

Polymerization products obtained in the presence of samples KSK and ASM are mainly 2, 4, 4-trimethylpentene-1 (to 45%), 2, 4, 4-trimethylpentene-2 (10%) and trimers (15– 25%). Polymerization on the remaining types of silicagels studied was accompanied by skeletal isomerization and formation of non-integral polymers (C5– C7 hydrocarbons).



3.

The optimum reaction temperature (in the interval from 100 to 500°) was 190°.



4.

Only sample KSK, among the silicagels studied, is regenerated by treatment with air at 300°.




TI - Catalytic polymerization of olefins
JF - Russian Chemical Bulletin
DO - 10.1007/BF00905955
DA - 2004-12-15
UR - https://www.deepdyve.com/lp/springer-journals/catalytic-polymerization-of-olefins-r0wDB07CPM
SP - 825
EP - 830
VL - 10
IS - 5
DP - DeepDyve
ER -