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13Catalytic steam gasification of biomass can produce clean and renewable hydrogen. In 14 this study, Ce/Fe bimetallic catalysts were used to promote hydrogen production from 15 cellulose steam catalytic reforming at 500-900 o C. The effect of different Ce/Fe ratios 16 on the catalytic performance of hydrogen production was studied. The distribution of 17 products, gas composition, carbon deposition and the stability of the catalyst were 18 analyzed with variant approaches. The results show that the catalytic performance of 19 the CeO2/Fe2O3 catalyst in relation to hydrogen production was much better than pure 20 CeO2 or Fe2O3. When the ratio of Ce:Fe was 3:7, the maximum yield of the H2 was 21 28.58 mmol at 800 o C. CeFeO3 could be generated at 800 o C or higher temperature 22 after redox reactions without forming CeO2/Fe2O3 clathrate. And the existence of 23 CeFeO3 enhanced the thermal stability of Ce/Fe catalyst. The presence of CeO2 not 24 only improved the oxidative ability of the iron catalysts, but also was in favour of the 25 oxidation of possible deposited carbon on the surface of the used catalysts.26

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The influence of Fe 2 O 3 on the SNCR deNO x process was investigated in a fixed-bed reactor. The experimental results demonstrated that Fe 2 O 3 has an inhibitory effect on the SNCR deNO x process that is more notable at low temperatures. Interactions between Fe 2 O 3 and NH 3 , Fe 2 O 3 -catalyzed NH 3 oxidation, and NO reduction by NH 3 were studied experimentally. In the absence of O 2 , Fe 2 O 3 was reduced by NH 3 to form Fe, which then catalyzed NH 3 decomposition to N 2 and H 2 . Fe 2 O 3 also catalyzed NO reduction by NH 3 . In the presence of O 2 , Fe 2 O 3 mainly catalyzed NH 3 oxidation. All reactions showed first-order characteristics with respect to NH 3 , which indicates that the adsorption of NH 3 and its dissociation into −NH 2 on the surface of Fe 2 O 3 is the rate-controlling step in these processes. The presence of O 2 and NO affected the selectivity of further −NH 2 reaction. A kinetic model was developed, and the simulation results agreed well with the experimental data.