Shape-Selective Synthesis of 2,6-Dimethylnaphthalene over ZSM-12 Zeolite Modified by Desilication in Alkaline Medium | Sciact - CRIS-system of Boreskov Institute of Catalysis

Shape-Selective Synthesis of 2,6-Dimethylnaphthalene over ZSM-12 Zeolite Modified by Desilication in Alkaline Medium Full article

Journal

Xiandai Huagong/Modern Chemical Industry
ISSN: 0253-4320

Output data

Year: 2009, Volume: 29, Number: 6, Pages: 40-43 Pages count : 5

Tags

2,6-dimethylnaphthalene, Alkylation, Desilication, Second mesopores, ZSM-12 zeolite

Authors

Wu Wei ¹ , Li Ling-feil ¹ , Wu Guangl ¹ , Wu Wei-guol ¹ , Yang Weil ¹ , Toktarev A.V. ² , Kikhtyanin O.V. ² , Echevskiy G.V. ²

Affiliations

1	Key Laboratory of Functional Inorganic Material Chemistry of Ministry of Education, School of Chemistry and Material Sciences, Heilongjiang University, Harbin 150080, China
2	Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Novosibirsk 630090, Russian Federation

The ZSM-12 zeolite with different degrees of desilication are prepared in NaOH solutions and characterized,and its catalytic performance in synthesis of 2,6-dimethylnaphthalene by the methylation of naphthalene with methanol is also investigated.The results show that the proportion of mesopores framework in the zeolite crystal can be turned expediently by controlling time of desilication at certain temperature in solutions with optimal concentration of NaOH,and the acidity also can be changed.The increase of activity of methylation of naphthalene with methanol and selectivity up to 2,6-DMN are observed over the ZSM-12 catalysts modified by the desilication process in alkaline medium because of diffusivity of products improved in the generated additional mesopores.The conversion of naphthalene and the selectivity to 2,6-DMN are 58.3% and 27.3%,respectively,over the HZSM-12 treated in 0.8 mol/L of NaOH at 65℃ for 1 hour under the optimum alkylation condition of naphthalene with mathanol after 4 hours of reaction.

Wu W. , Li L-f. , Wu G. , Wu W-g. , Yang W. , Toktarev A.V. , Kikhtyanin O.V. , Echevskiy G.V.
Shape-Selective Synthesis of 2,6-Dimethylnaphthalene over ZSM-12 Zeolite Modified by Desilication in Alkaline Medium
Xiandai Huagong/Modern Chemical Industry. 2009. V.29. N6. P.40-43. Scopus РИНЦ ANCAN

Scopus:	2-s2.0-67651026974
Elibrary:	13616185
Chemical Abstracts:	2009:1133131
Chemical Abstracts (print):	153:289647

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