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Effects of Current upon electrochemical catalytic reforming of Anisole

Chinese Journal of Chemical Physics 2010年第6期23卷 693-700,746页

作者：熊佳星阚涛李兴龙叶同奇李全新中国科学技术大学化学物理系生物质洁净能源实验室合肥230026

The reforming of anisole （as model compound of bio-oil） was performed over the NiCuZn-Al2O3 catalyst, using a recently-developed electrochemical catalytic reforming （ECR）. The influence of-the current on the anisole reforming in the ECR process has been investigated. It was observed that anisole reforming was significantly enhanced by the current approached over the catalyst in the electrochemical catalytic process, which was due to the non-uniform temperature distribution in the catalytic bed and the role of the thermal electrons originating from the electrified wire. The maximum hydrogen yield of 88.7% with a carbon conversion of 98.3% was obtained through the ECR reforming of anisole at 700℃ and 4 A. X-ray diffraction was employed to characterize catalyst features and their alterations in the anisole reforming. The apparent activation energy for the anisole reforming is calculated as 99.54 kJ/mol, which is higher than ethanol, acetic acid, and light fraction of bio-oil. It should owe to different physical and chemical properties and reforming mechanism for different hydrocarbons.

关键词： Hydrogen Anisole NiCuZn-Al2O3 electrochemical catalytic reforming

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Production of Hydrogen from Bio-oil Using Low-temperature electrochemical catalytic reforming Approach over CoZnAI Catalyst

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Chinese Journal of Chemical Physics 2010年第4期23卷 451-458,I0002页

作者：林少斌叶同奇袁丽霞侯滔李全新中国科学技术大学化学物理系生物质洁净能源实验室合肥230026

High-efficient production of hydrogen from bio-oil was performed by electrochemical catalytic reforming method over the CoZnAl catalyst. The influence of current on the hydrogen yield, carbon conversion, and products distribution were investigated. Both the hydrogen yield and carbon conversion were remarkably enhanced by the current through the catalyst, reaching hydrogen yield of 70% and carbon conversion of 85% at a lower reforming temperature of 500 ℃. The influence of current on the properties of the CoZnAl catalyst was also characterized by X-ray diffraction, X-ray photoelectron spectroscopy, thermal gravimetric analysis, and Brunauer-Emmett-Teller measurements. The thermal electrons would play an important role in promoting the reforming reactions of the oxygenated-organic compounds in the bio-oil.

关键词： Hydrogen Bio-oil CoZnAl catalyst electrochemical catalytic reforming

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hydrogen production from bio-oil using electrochemical catalytic reforming method over Ni based catalyst

hydrogen production from bio-oil using electrochemical catal...

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生物质能源技术国际会议

作者： Li-xia YUAN~a,Qi ZHAI~a,Shao-bin LIN~a,Quan-xin LI~(a,*) a Department of Chemical Physics,Lab of Biomass Clean Energy,University of Science & Technology of China,Hefei, Anhui,230026,P.R.China

A high effective reforming method for the production of hydrogen from the bio-oil,generated from fast pyrolysis of biomass, was performed at much lower temperature by using electrochemical catalytic steam reforming over the conventional Ni-based *** electrochemical catalytic reforming was carried out in the fixed-bed continuous flow reactor,where an ac electronic current passed through the 18%NiO/AlO *** was found that the performance of the bio-oil steam reforming not only depends on the reforming temperature,but also remarkably enhanced by the current through the catalyst. During the electrochemical catalytic reforming process,it was noticed that both the hydrogen yield and the carbon conversion were largely enhanced by the current through the *** carbon conversion increased from 23.8%to 81.5%with increasing the current from 0 to 3.1 A at 450℃,and reaches 93.0%at 3.1 A and 500℃,the hydrogen yield also increased with increasing the current at various fixed reforming temperature

关键词： Hydrogen Bio-oil Ni based catalyst electrochemical catalytic reforming

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Effects of Current on Microcosmic Properties of Catalyst and reforming of Bio-oil

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Chinese Journal of Chemical Physics 2009年第1期22卷 34-40页

作者： Li-xia Yuan Tong-qi Ye Fei-yan Gong Quan-xin Li Department of Chemical Physics Anhui Key Laboratory of Biomass Clean Energy University of Science and Technology of China Hefei 230026 China

Highly effective production of hydrogen from bio-oil was achieved by using a low-temperature electrochemical catalytic reforming approach over the conventional Ni-based reforming catalyst （NiO-Al2O3）, where an AC electronic current passed through the catalyst bed. The promoting effects of current on the bio-oil reforming were studied. It was found that the performance of the bio-oil reforming was remarkably enhanced by the current which passed through the catalyst. The effects of currents on the microcosmic properties of the catalyst, including the Brunauer-Emmett-Teller （BET） surface area, pore diameter, pore volume, the size of the crystallites and the reduction level of NiO into Ni, were carefully characterized by BET, X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscope. The desorption of the thermal electrons from the electrified catalyst was directly observed by the TOF （time of flight） measurements. The mechanism of the electrochemical catalytic reforming of bio-oil is discussed based on the above investigation.

关键词： Current Bio-oil electrochemical catalytic reforming Characterization

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