TY - GEN
T1 - Catalytic performance of medium and large-pore zeolites for vapor-phase methylation of 2-methylnaphthalene
AU - Saha, Shyamal Kumar
AU - Zhang, Chen
AU - Song, Chunshan
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Several medium and large pore molecular sieves were synthesized by hydrothermal synthesis method and examined for methylation of 2-methylnaphthalene. All the molecular sieves show good crystallinity with pure phase under the condition used. The physical properties of the materials were measured by the BET sorption method. The synthesized materials show microporous nature with typical type-I isotherm. However, BEA and MCM-22 shows slightly mesoporous characteristics with hysteresis loop. The activity of the molecular sieves catalysts for methylation of 2-methylnaphthalne decreases in the following order: Y=BEA>MCM-22>ZSM-5>SAPO-5. The rapid deactivation occurred in Y and BEA zeolite within 2 h time on stream (TOS). However, MCM-22 gave reasonable activity (50-40 % conv) with more stable performance. The SAPO-5 and ZSM-5 shows poor activity. The selectivity ratio of 2,6-DMN/2,7-DMN decreases in the order of SAPO-5>BEA=Y>MCM-22>ZSM-5.
AB - Several medium and large pore molecular sieves were synthesized by hydrothermal synthesis method and examined for methylation of 2-methylnaphthalene. All the molecular sieves show good crystallinity with pure phase under the condition used. The physical properties of the materials were measured by the BET sorption method. The synthesized materials show microporous nature with typical type-I isotherm. However, BEA and MCM-22 shows slightly mesoporous characteristics with hysteresis loop. The activity of the molecular sieves catalysts for methylation of 2-methylnaphthalne decreases in the following order: Y=BEA>MCM-22>ZSM-5>SAPO-5. The rapid deactivation occurred in Y and BEA zeolite within 2 h time on stream (TOS). However, MCM-22 gave reasonable activity (50-40 % conv) with more stable performance. The SAPO-5 and ZSM-5 shows poor activity. The selectivity ratio of 2,6-DMN/2,7-DMN decreases in the order of SAPO-5>BEA=Y>MCM-22>ZSM-5.
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M3 - Conference contribution
AN - SCOPUS:78649796556
SN - 9780841200050
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
T2 - 238th National Meeting and Exposition of the American Chemical Society, ACS 2009
Y2 - 16 August 2009 through 20 August 2009
ER -