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A series of Mn/TiWOx catalysts were prepared and used in NH3-SCR reaction for NOx emission control. The experimental results showed that the SCR activities of Mn/TiWOx catalysts are higher than that of Mn/TiO2 catalyst. After that, several characterization techniques including XRD, H2-TPR, NH3-TPD, XPS were used to investigate the effect of TiWOx support on the SCR performance of Mn/TiWOx (1:1) catalyst...
The effect of HF treatment on the performance of ceria for selective catalytic reduction of NO with NH3 was investigated in this study. The experimental results showed that HF treatment could greatly enhance the SCR performance of ceria within the temperature range of 100–400°C. From the characterization results of Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), temperature programmed reduction...
Na has a serious deactivation effect on Mn/TiO2 catalyst for selective catalytic reduction of NO with NH3. In this study, it was found that Sb had a promotion effect on the Na resistance of MnOx/TiO2 catalyst. Then the promotion mechanism was investigated based on the characterization results of BET, XRD, H2-TPR, NH3-TPD, XPS and in situ DRIFT. The results of H2-TPR and NH3-TPD showed that the addition...
High tar contents and low carbon conversion levels are two major problems in traditional biomass gasification technologies. Based on our research results especially on the volatile–char interaction and catalytic tar reforming, an advanced biomass gasification technology integrated with catalytic hot gas cleaning has been developed to produce high quality clean fuel gas. A lab-scale pilot gasifier...
Mallee eucalypt crops from the low-rainfall dryland agricultural regions of southern Australia may become a major source of woody biomass for production of liquid biofuels through pyrolysis and biorefinery. Pyrolysis studies have commonly focused on the woody fraction and relatively little is known about the pyrolysis behaviour of leaves that make up a substantial portion of the overall plant biomass...
The purpose of this study was to investigate the effects of inorganic species in biomass, especially the alkali and alkaline earth metallic (AAEM) species (K, Na, Mg and Ca), on the yield and properties of bio-oil from the pyrolysis of biomass. A mallee wood sample from Western Australia was washed with water and a dilute acid solution to remove its AAEM species. The water-washed and acid-washed mallee...
This paper reports the simultaneous catalytic esterification and acetalisation of a bio-oil with methanol using a commercial Amberlyst-70 catalyst at temperatures between 70 and 170°C. The bio-oil was prepared from the pyrolysis of mallee woody biomass in a fluidised-bed pyrolysis reactor under the fast heating rate conditions. Our results show that the conversion of light organic acids and aldehydes...
This study aims to investigate the effects of biomass particle size (0.18–5.6mm) on the yield and composition of bio-oil from the pyrolysis of Australian oil mallee woody biomass in a fluidised-bed reactor at 500°C. The yield of bio-oil decreased as the average biomass particle size was increased from 0.3 to about 1.5mm. Further increases in biomass particle size did not result in any further decreases...
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