Search: onr:"swepub:oai:DiVA.org:kth-23360" >
Effects of SiO2/Al2...
Effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on the catalytic activity of HZSM-5 zeolites in the methylation of 4-methylbiphenyl with methanol
- Article/chapterEnglish2004
Publisher, publication year, extent ...
-
Elsevier BV,2004
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:kth-23360
-
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-23360URI
-
https://doi.org/10.1016/j.apcata.2003.11.001DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
QC 20100525
-
The objective of this work is to study the effects Of SiO2/Al2O3 of HZSM-5, MgO modification and hydrothermal treatment on methylation of 4-methylbiphenyl (4-MBP) with methanol under fixed-bed down-flow conditions. The results show that, with an increase in the SiO2/Al2O3 of HZSM-5 (from 50 to 150, molar ratio), the selectivity to 4,4'-dimethylbiphenyl (4,4'-DMBP) increases from 25 to 79%. MgO modification also increases the selectivity to 4,4'-DMBP, but leads as well to low catalyst activity and rapid deactivation. Hydrothermal treatment not only increases the selectivity, but also improves the stability. When CBV1502 (SiO2/Al2O3 = 150) catalyst was hydrothermally treated at 500degreesC, the selectivity to 4,4'-DMBP increased to 85%. The selectivity to 4,4'-DMBP was further improved to about 90% by the increasing in the amount of mesitylene in the feed as solvent.
Subject headings and genre
-
shape selectivity
-
4-methylbiphenyl
-
methylation
-
HZSM-5
-
SiO2/Al2O3
-
MgO modification
-
hydrothermal treatment
-
shape-selective alkylation
-
polynuclear aromatics
-
specialty chemicals
-
mfi structure
-
naphthalene
Added entries (persons, corporate bodies, meetings, titles ...)
-
Shen, J. P.
(author)
-
Sun, Licheng
(author)
-
Song, C. S.
(author)
-
Wang, X. S.
(author)
Related titles
-
In:Applied Catalysis A: Elsevier BV261:2, s. 183-1890926-860X1873-3875
Internet link
Find in a library
To the university's database