Carbon molecular sieves for catalyst supports: Thiophene hydrodesulfurization

Author

Ihma, Son-Ki ; Hussaina, Murid

Author_Institution

Dept. of Chem. & Biomol. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon

fYear

2008

fDate

6-9 Jan. 2008

Firstpage

1212

Lastpage

1217

Abstract

The potential of two different mesoporous carbon materials, CMK-1 and CMK-3 supported sulfided Mo catalysts for hydrodesulfurization of thiophene at specific conditions was explored to investigate the effect of different pore sizes, surface oxygen functional groups, metal dispersion, and presulfidation temperature. The Mo catalysts (1~10 wt% of Mo) supported on mesoporous carbons were prepared with (NH₄)₆Mo₇O₂₄ldr4H₂O. For comparison, commercial activated carbon (Darco G-60) and alumina (gamma-Al₂O₃) were used as a support for the Mo supported catalysts. Characterization of the supports and the catalysts was carried out by XRD, BET, TEM, EDS, FTIR, acid-base titration, and CO chemisorption. Sulfidation of carbon supported catalysts was favored at 300degC, whereas 400degC favored the sulfidation of alumina supported catalysts. 10 wt% Mo supported catalysts showed the highest thiophene hydrodesulfurization activity in all supports.

Keywords

carbon; catalysis; chemisorption; mesoporous materials; molecular sieves; porosity; Al₂O₃; BET; C; CO chemisorption; EDS; FTIR; TEM; XRD; acid-base titration; carbon molecular sieves; catalysis; metal dispersion; pore size; presulfidation temperature; sulfidation; surface oxygen functional groups; temperature 300 degC; temperature 400 aK; thiophene hydrodesulfurization; Chemical engineering; Chemical technology; Fuels; Mesoporous materials; Molecular sieves; Organic materials; Petroleum; Refining; Silicon compounds; Surface resistance; CMK-1; CMK-3; MoS2 dispersion; hydrodesulfurization; surface functional groups;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems, 2008. NEMS 2008. 3rd IEEE International Conference on

Conference_Location

Sanya

Print_ISBN

978-1-4244-1907-4

Electronic_ISBN

978-1-4244-1908-1

Type

conf

DOI

10.1109/NEMS.2008.4484535

Filename

4484535