1560-93-6Relevant articles and documents
Facile and cost-effective synthesis of acidity-enhanced amorphous silica-alumina for high-performance isomerization
Li, Tao,Tao, Zhichao,Yang, Yong,Zhang, Ling
, (2021)
To achieve facile cost-effective synthesis of acidity-enhanced amorphous silica-alumina (ASA), a water-based sol-gel process is developed. Effectively, this method not only enhances acid sites density, but also lowers the cost by using aluminum nitrate nonahydrate instead of expensive organic aluminum precursor. The resulting material has a uniform mesopore distribution (~3.8 ?nm) and a large surface area (455 ?m2/g), with very few micropores. And the Br?nsted-site density (200 ?°C) is 1.5 times higher than that of commercialized ASA Siral 70, which is ascribed to the abundant four- and five-coordinated aluminum species. The effectiveness of this as-synthesized ASA has been demonstrated for n-hexadecane hydroisomerization, affording a multi-branched isomer yield of 43.1%. In addition, good performance can be expected in other bulky-molecule-involved cracking and alkylation processes.
Pd/SAPO-41 Bifunctional Catalysts with Enhanced Pd Dispersion Prepared by Ultrasonic-Assisted Impregnation: High Selectivity for n-Hexadecane Hydroisomerization
Bai, Xuefeng,Guo, Chunmu,Jia, Guozhi,Li, Tong,Maximov, A. L.,Su, Xiaofang,Wang, Wei,Wei, Xiaomeng,Wu, Wei
, p. 502 - 511 (2020/05/29)
Two series of Pd/SAPO-41 bifunctional catalysts were synthesized via the ultrasonic-assisted impregnation (xPd/S41-U) with different treating time and conventional incipient wetness impregnation methods (0.30Pd/S41-I) on the SAPO-41 molecular sieve, respe
COMBINATION COMPOSITION COMPRISING BENZOYL PEROXIDE AND ADAPALENE
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, (2012/10/08)
An aqueous gel composition of the present invention comprising about 0.1 to 0.3 wt % adapalene and about 2.5 to 5.0 wt % benzoyl peroxide, as active ingredients, wherein both the active ingredients are stabilized in hydrophilic gelling matrix of pH dependent gelling agent comprising crosslinked, acrylic acid-based polymer(s).