燃料化学学报2018，Vol.46Issue(6)：666-672,7.
用于低温浆态床二甲醚水蒸气重整制氢的水解组分γ-Ga2O3的制备与表征
Preparation and characterization of hydrolysis component γ-Ga2O3 for hydrogen production by low temperature steam reforming of dimethyl ether in slurry reactor
摘要
Abstract
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-Ga2O3has 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.关键词
均匀沉淀法/γ-Ga2O3/低温/浆态床/二甲醚/水蒸气重整Key words
homogeneous precipitation/γ-Ga2O3/low temperature/slurry bed/dimethyl ether/steam reforming分类
化学化工引用本文复制引用
王东升,张素玲,魏磊,卢艳红,景学敏..用于低温浆态床二甲醚水蒸气重整制氢的水解组分γ-Ga2O3的制备与表征[J].燃料化学学报,2018,46(6):666-672,7.基金项目
The project was supported by Science and Technology Planning Project of Hebei Province, China (13214606), National Natural Science Foundation of China (51502125) and Scientific Research Project of Langfang Normal University (LSZB201007).河北省科技计划项目(13214606),国家自然科学基金(51502125)和廊坊师范学院科学研究项目(LSZB201007)资助 （13214606）
