Trimerization of isobutene over a zeolite beta catalyst

Rational synthesis of Beta zeolite with improved quality by decreasing crystallization temperature in organotemplate-free route

“…Beta zeolite with unique three-dimensional network of large pores (12MR) exhibits excellent properties in a series of catalytic reactions such as the petroleum refining and fine chemical synthesis [28][29][30][31][32][33][34]. However, its wide applications are still challenging by the use of organic templates such as tetraethylammonium hydroxide (TEAOH).…”

Application Possibilities of Zeolite Catalysts in Oligomerization of Light Olefins

“…We found that the conversions were lower than those found by others in experiments with model compounds [7][8][9][10][11][12][13][14]. This was expected, because the applied feedstock contained relatively large amounts of materials inert to oligomerization (approx.…”

“…Through evaluating the results we divided the C 8+ products into two fractions according to carbon number, thus giving the C 8-11 and C 12+ selectivity (C 8-11 selectivity = weight of C [8][9][10][11] hydrocarbon/weight of C 8+ hydrocarbons *100, C 12+ selectivity = 100 -C 8-11 selectivity). These data characterized the oligomerization reactions having taken place on the catalyst.…”

“…Another advantage is that the oligomerization is flexible in terms of the average molecular weight of the hydrocarbon product and thus in terms of the composition (gasoline, JET, and gas oil fractions). The oligomerization has already been studied by using a variety of catalysts [3], such as solid phosphoric acid [4][5][6], zeolites [7][8][9][10][11][12][13][14][15], acidic ion exchange resins [14][15][16][17][18][19][20], metal oxide catalysts [21][22] and ionic liquids [23][24][25][26].…”

“…With increasing the size of the modifying cations the dimer selectivity increased. Yoon [9][10][11][12][13][14], primarily isobutene trimerization on different zeolite catalysts (e.g. beta zeolite, USY zeolite, mordenite, ferrierite).…”