Catalyst composition comprising con-type zeolite and zsm-5-type zeolite, preparation and process using such composition
A technology of ZSM-5 and catalyst, which is applied in the field of catalyst preparation and can solve problems such as loss
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[0044] ZSM-5 zeolite with a silica to alumina molar ratio of 23 and a number average crystal size of 100 nm was obtained from Zeolyst International. CON zeolite with a silica to alumina molar ratio of 79 was prepared according to the method as described in US7648694.
[0045] The support was prepared by extruding a mixture of 80 wt% zeolite and 20 wt% alumina (Pural SB1, available from Sasol). The resulting extrudates were dried and calcined at about 550°C for 1 hour. 0.3 wt% rhenium was incorporated in the calcined extrudate by pore volume impregnation using a perrhenic acid solution. The impregnated extrudates were dried at 140°C for two hours and then calcined at 480°C for 1 hour. The resulting catalyst compositions were ground to 30-80 mesh particles and mixed in different ratios to obtain various transalkylation catalyst systems as described in Table 2.
[0046] Using on-line GC analysis, the catalyst system was evaluated for transalkylation in a pilot plant on a typic...
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