Citation: WANG Dong-sheng, ZHANG Su-ling, WEI Lei, LU Yan-hong, JING Xue-min. Preparation and characterization of hydrolysis component γ-Ga₂O₃ for hydrogen production by low temperature steam reforming of dimethyl ether in slurry reactor[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(6): 666-672. shu

Preparation and characterization of hydrolysis component γ-Ga₂O₃ for hydrogen production by low temperature steam reforming of dimethyl ether in slurry reactor

Department of Chemistry and Material Science, Langfang Normal University, Langfang 065000, China

Corresponding author: WANG Dong-sheng, wds0701@163.com
Received Date: 23 March 2018
Revised Date: 26 April 2018

Fund Project: National Natural Science Foundation of China 51502125Science and Technology Planning Project of Hebei Province, China 13214606The project was supported by National Natural Science Foundation of China (51502125), Science and Technology Planning Project of Hebei Province, China (13214606) and Scientific Research Project of Langfang Normal University (LSZB201007)Scientific Research Project of Langfang Normal University LSZB201007

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The oxide of gallium was prepared by homogeneous precipitation in organic solvent. The physical structure and surface properties were characterized by XRD, NH₃-TPD, TEM and BET. The results reveal that γ-Ga₂O₃ was obtained after 500 ℃ heat treatment of the precursor of GaOOH. The lattice type of the γ-Ga₂O₃ is similar to that of γ-Al₂O₃, which belongs to cubic, cation-deficient spinel structure. The γ-Ga₂O₃ has a moderate acid center with larger amount of acid content. Most of the γ-Ga₂O₃ is two-dimensional nanoflakes with thickness of 10 nm and diameter of 100 nm. These nanoflakes are mainly distributed in one direction, and some of them form petal-shaped patterns. The experimental results showed that the conversion rate of dimethyl ether (DME) was about 24% at 270 ℃, which was close to equilibrium conversion. The texture properties of the catalyst had no significant change after the reaction and the specific surface of the catalyst was about 130 m²/g. The composite catalyst composed of the γ-Ga₂O₃ and Cu-based catalyst was used to DME steam reforming reaction in slurry bed at 270 ℃. The conversion of DME and selectivity of H₂ were as high as about 99% and 68%, respectively. The conversion of DME was over 95% after reaction time of 200 h.
- homogeneous precipitation,
- γ-Ga₂O₃,
- low temperature,
- slurry bed,
- dimethyl ether,
- steam reforming
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation and characterization of hydrolysis component γ-Ga2O3 for hydrogen production by low temperature steam reforming of dimethyl ether in slurry reactor

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通讯作者: 陈斌, bchen63@163.com

Preparation and characterization of hydrolysis component γ-Ga₂O₃ for hydrogen production by low temperature steam reforming of dimethyl ether in slurry reactor