Synthesis, stability, and sulfation properties of sol-gel-derived regenerative sorbents for flue gas desulfurization

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie950399d· OSTI ID:238054

Deng, S G; Lin, Y S ^[1]

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1. Univ. of Cincinnati, OH (United States). Dept. of Chemical Engineering

The sol-gel method is applied to prepare {gamma}-alumina-supported copper oxide and calcium oxide sorbents containing 10--50 wt% active species. The prepared sorbents are characterized for their pore texture, dispersion of active species on the surface of support, and desulfurization properties. The sol-gel-derived alumina-supported sorbents have a relatively large surface area (> 200 m{sup 2}/g) and pore volume (> 0.3 cm{sup 3}/g) and uniform pore size distribution (20--60 {angstrom}). Thermal and chemical stability of the sol-gel-derived sorbents is studied by comparing the pore texture data of the sorbents before and after several different heat treatments. The stability results show that the pore structure of the sol-gel-derived sorbents is stable in the normal conditions of the flue gas desulfurization process. It is found that CuO/{gamma}-Al{sub 2}O{sub 3} sorbent containing 20 wt% of CuO coated as a monolayer or submonolayer on the surface of support has the highest SO{sub 2} sorption capacity (22.5 wt% at 500 C). The sol-gel-derived CuO/{gamma}-Al{sub 2}O{sub 3} sorbent exhibits desired sulfation and regeneration properties.

• OSTI ID: 238054
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 4 Vol. 35; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
ADSORBENTS
ADSORPTION
ALUMINIUM OXIDES
CALCIUM OXIDES
CHEMICAL PREPARATION
COPPER OXIDES
DESULFURIZATION
FLUE GAS
PERFORMANCE
SOL-GEL PROCESS
STABILITY
SULFUR DIOXIDE