1. RECLAIR M24300 Reliance Industries Limited LLDPE is a Butene comonomer based linear low density grade with narrow molecular weight distribution and optimum levels of antioxidants.

2. From the isobutane alkylation with butene at the presence of acidic catalyst, alkylate is the ideal blend composition of gasoline.

3. From the isobutane alkylation with butene at the presence of acidic catalyst, alkylate is the ideal blend component of automobile gasoline.

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4. The mass fraction of n - butene in mixed C 4 from catalytic cracking after etherized was approximately 40 %.

5. The oxidative dehydrogenation of butane to butene and butadiene was studied by using conventional fixed bed reactor (FBR), inert membrane reactor (IMR) and mixed inert membrane reactor (MIMR).

6. It is also shown that the cracking reactions of butene to ethylene and propylene may proceed via the mechanism of first dimerization then cracking.

7. The copolymer of propylene with a small amount of butene was prepared by heterogeneous Ziegler ? Natta catalyst.

8. Duplication of bands in this region also shown by trifluoropropyne and perfluoro 2 - butene.

9. Performance tests showed that the isobutene conversions are 100% and the normal butene conversions are higher than 15%, both reached the process design targets.

10. In addition, the reaction mechanism of bond isomerization of butene catalyzed by HF has been investigated.

11. The emphasis was on the synthesis methods including the ones using fumaric acid or cis- fumaric anhydride or cis- butene bicarboxylic anhydride as raw materials.

12. Several zeolite catalysts were selected to convert 1 hexene to 2,3 dimethyl 2 butene (DMB 2) in this work. ZSM 35 and SAPO 11 zeolite are suitable skeletal isomerization catalysts.

13. Duplication of bands in this region is also shown by trifluoropropyne and perfluoro 2 - butene.

14. This paper elucidates the present situation of research and development of solid acid catalysts for the alkylation of isobutane with butene.