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Issue 115, 2016, Issue in Progress
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Efficient removal of HCN through catalytic hydrolysis and oxidation on Cu/CoSPc/Ce metal-modified activated carbon under low oxygen conditions

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Abstract

The hydrogen cyanide (HCN) removal efficiency of activated carbon modified with different metal was studied under low oxygen conditions. When activated carbon was modified with Cu(NO)3, cobalt sulfonated phthalocyanine (CoSPc) and Ce(NO3)3·6H2O, its catalytic efficiency in HCN removal was significantly enhanced with the optimal conditions of 400 °C as the calcination temperature, 10% relative humidity and 1% oxygen concentration. And the catalytic hydrolysis and oxidation efficiency of AC–Cu–CoSPc–Ce was more than 98% at 200–350 °C with the maximum selectivity to N2 of 52.6% at 300 °C. Although both AC–Cu and AC–Cu–CoSPc–Ce catalysts were reliable and stable, AC–Cu–CoSPc–Ce had a better catalytic activity at lower temperature. According to BET and X-ray photoelectron spectroscopy (XPS) results, Cu was mainly in the form of CuO and Cu2O, Co was present in the form of Co2+ and Co0, and Ce was mainly in the form of CeO2 and Ce2O3 on the catalyst surface. The reaction pathways were proposed.

Graphical abstract: Efficient removal of HCN through catalytic hydrolysis and oxidation on Cu/CoSPc/Ce metal-modified activated carbon under low oxygen conditions

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Article information


Submitted
30 Aug 2016
Accepted
29 Nov 2016
First published
30 Nov 2016

RSC Adv., 2016,6, 113834-113843
Article type
Paper

Efficient removal of HCN through catalytic hydrolysis and oxidation on Cu/CoSPc/Ce metal-modified activated carbon under low oxygen conditions

L. Wang, X. Wang, X. Jing and P. Ning, RSC Adv., 2016, 6, 113834
DOI: 10.1039/C6RA21715J

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