fulltext.study @t Gmail

HDS of 4,6-dimethyldibenzothiophene over MoS2 catalysts supported on macroporous carbon coated with aluminosilicate nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
42535 45929 2009 8 PDF Available
Title
HDS of 4,6-dimethyldibenzothiophene over MoS2 catalysts supported on macroporous carbon coated with aluminosilicate nanoparticles
Abstract

Highly dispersed and stabilized aluminosilicate nanoparticles were hydrothermally grown onto the surface of macroporous carbon with the aid of polyelectrolyte multilayer structure. The formation of the anchored aluminosilicate particles was followed by SEM and 27Al solid-state NMR. The acidity of the carbon-supported aluminosilicate nanoparticles was evaluated by ammonia-TPD and n-hexane cracking, which exhibited activation energy of 12 kcal mole−1. Impregnation of the carbon-supported aluminosilicate nanoparticles with aqueous solution of molybdenum citrate complex formed at pH 1.5 produced a supported MoS2 catalysts that exhibited HDS activity for 4,6-DMDBT ∼3.5 times higher than its aluminosilicate-free analogue. The higher activity of the catalysts is attributed to a great extent to its enhanced hydrogenation ability with no significant contribution to other reactions.

Graphical abstractHighly dispersed and stabilized aluminosilicate nanoparticles were hydrothermally grown onto the surface of macroporous carbon with the aid of polyelectrolyte multilayer structure. Impregnation of the carbon-supported aluminosilicate nanoparticles with molybdenum solution at pH 1.5 produced a supported MoS2 catalysts exhibiting HDS activity for 4,6-DMDBT ∼3.5 times higher than its aluminosilicate-free analogue.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Hydrodesulfurization; 4,6-Dimethyldibenzothiophene; Molybdenum sulfide; Acidic support; Carbon; Hydrothermal synthesis; Polyelectrolyte
First Page Preview
HDS of 4,6-dimethyldibenzothiophene over MoS2 catalysts supported on macroporous carbon coated with aluminosilicate nanoparticles
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 359, Issues 1–2, 15 May 2009, Pages 180–187
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis