| With the improvement of environmental protection concern, the requirement for combustion quality of gasoline becomes stricter, one of future gasoline quality developing trends is decreasing olefine content. At present,gasoline specification has become effective in our country in which the content of olefine must be under 35%, olefine must be under 20% in 2 level of"World-wide fuel charter", olefine must be under 10% in 3 level. However, domestic gasoline composition mainly is FCC gasoline, which has high olefine content, can not meet specifications.At present, olefine isomerization study is mainly focused on butylene isomerizatio. To solve the problem, this paper synthesized Ha-APO-11 zeolite by hydrothermal method, carried out Ha-APO-11 zeolite scale-up synthesis test, and mastered influence factors during the Ha-APO-11 zeolite synthesis process. Though hydrogenation activity investigation using n-butylene,1-butylethylene and FCC gasoline as feedstocks, the main results are as follows:1.Heteroatomic substituted aluminophosphate ( Ha-APO-11 ) zeolite is a kind of microporous zeolite which has better shape selectivity performance showed better olefine skeletal isomerization ability;2. Different inorganic feed synthesis test showed that acid silica sol is an ideal Si source and pseudo-boehmite is an ideal Al source for SAPO-11 zeolite synthesis;3.During heteroatomic substituted aluminophos-phatebase(dHa-APO-11)zeolite process, PH, templates and recrystalization conditions had very important influence on its structure and performance;4.Different metal-substituted Ha-APO-11 zeolite revealed different structure and performance;5. Optimized synthesis process of Ha-APO-11 zeolite, we attained simple synthesis process and convenient structure control method;6. We successfully synthesized dual component-substituted Ha-SAPO-11 zeolite;7.Ha-APO-11 zeolite has higher activity and selectivity for n-butylene,1-butylethylene and FCC gasoline skeletal isomerization reaction. |
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