Hydroxyl-promoter on hydrated Ni-(Mg,Si) attapulgite with high metal sintering resistance for biomass derived gas reforming |
| |
| Affiliation: | 1. School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China;2. Shandong Taihe New Material Technology Co., Ltd. Jinan, 250022, PR China;3. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, PR China;4. Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China;1. School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China;2. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, Jiangsu, PR China;3. Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China;4. School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China;1. School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, PR China;2. School of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan 232001, PR China;1. Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China;2. MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China;3. Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada |
| |
| Abstract: | As hydrated magnesium-aluminum-silicate crystals, attapulgite and HNO3/NaOH pretreated attapulgite were used as support to prepare nickel-based catalysts via ultrasonic-assisted impregnation method. The as-prepared catalysts were employed in the biomass derived gas (especially CO2 and CH4) reforming with a considerable catalytic performance achieved (CH4 conversion: 75.26%, CO2 conversion: 85.75%) over HNO3-attapulgite (10% Ni) at 700 °C and GHSV of 36000 mL/g.h during 600 min, demonstrating the potential of modified attapulgite as support applied in catalytic reforming. According to the characterization results obtained from BET/FT-IR/H2-TPR/XRD/SEM/TPO, it was found that the formation of (Ni, Mg) containing phyllosilicate improved metal sintering resistance by the confinement effect. Besides, FT-IR results illustrated the existence of hydroxyl in the catalyst structure, which was beneficial for inhibiting the Boudouard side reaction, further enhancing the carbon resistance of catalysts. Moreover, TPO results showed that the deposited carbon on modified attapulgite was mainly fibrous carbon which can be removed easily, thus maintaining the catalytic performance. Due to its unique structure and high metal sintering resistance, it is believed that the attapulgite supported catalyst can be used in any other catalytic reforming process such as steam reforming of methane. |
| |
| Keywords: | Gas reforming Attapulgite Sintering resistance Confinement effect |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
