化工学报Issue(8)：3004-3011,8.DOI:10.3969/j.issn.0438-1157.2014.08.022
小球藻热解油在Ni-Cu/ZrO2催化剂上的加氢脱氧
Catalytic hydrodeoxygenation of fast pyrolysis bio-oil of chlorella over Ni-Cu/ZrO2 catalyst
摘要
Abstract
The catalytic hydrodeoxygenation of bio-oil obtained by fast pyrolysis of chlorella over Ni-Cu/ZrO2 catalyst was carried out in a fixed-bed reactor to improve the quality of the bio-oil. The catalysts were characterized by XRD, H2-TPR, TG and NH3-TPD techniques. The results showed that the addition of Cu promoted dispersion of active species, and increased catalytic hydrodeoxygenation activity of Ni-Cu/ZrO2 catalysts. However, the activity went up first, and then went down with increase of Cu loading. A possible theoretical explanation was also given. At reaction conditions of 2 MPa and 350℃, the performance of Ni-Cu/ZrO2 catalyst was stable and it made the oxygen content in the bio-oil decreased sharply. For the Ni-Cu/ZrO2 catalyst with Cu/Ni mass ratio of 0.40, the efficiency of oxygen removal was 82.0%after 3 h reaction and larger than 77.0%after 24 h reaction. The heat value of upgraded bio-oil increased from 31.5 MJ·kg-1 to 35.0 MJ·kg-1, while the kinetic viscosity at 40℃fell from 20.5 mm2·s-1 to 9.5 mm2·s-1 after hydrodeoxygenation reaction. In addition, the water in upgraded bio-oil could be removed easily. Furthermore, the stability of upgraded bio-oil was improved significantly due to the reduction of unstable acids.关键词
生物能源/固定床/催化剂/生物油/加氢脱氧Key words
bioenergy/fix-bed/catalyst/bio-oil/hydrodeoxygenation reaction分类
能源科技引用本文复制引用
张亮,吴曼,杨雅,张秀丽,徐秀峰,郭庆杰..小球藻热解油在Ni-Cu/ZrO2催化剂上的加氢脱氧[J].化工学报,2014,(8):3004-3011,8.基金项目
海洋可再生能源专项资金项目(GHME2001SW02)。@@@@supported by the Special Fund of Marine Renewable Energy (GHME2001SW02) （GHME2001SW02）
