大连理工大学化学工艺系,辽宁,大连,116012
网络首发:2008-08-10,
纸质出版:2008
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于建华, 袁红艳, 徐绍平, 等. Ni-Fe/坡缕石催化水蒸气重整杏核热解焦油制氢[J]. 西安交通大学学报, 2008,42(8):1049-1053.
于建华, 袁红艳, 徐绍平, et al. Steam Reforming of Apricot Stone Pyrolysis Tar for Hydrogen with Ni-Fe/Attapulgite as Catalyst[J]. 2008, 42(8): 1049-1053.
以坡缕石为载体用共沉淀法制备了Ni-Fe/坡缕石催化剂
考察了不同煅烧温度、反应温度、水碳摩尔比条件下该催化剂对杏核热解焦油水蒸气重整制富氢气体的性能
采用扫描电镜、比表面积分析以及X射线衍射仪
对Ni-Fe/坡缕石催化剂进行了结构表征
并与其他3种生物质气化催化剂(石英砂
白云石
商业镍基催化剂Z409)进行了对比.结果表明
Ni-Fe/坡缕石催化剂具有良好的低温活性和抗积碳能力
在500 ℃、质量空速为0.62 h
-1
和水碳摩尔比为4.3的条件下
碳转化率达到了92.1%
在连续5 h的实验中未发现失活现象
而相同条件下Z409催化剂的活性寿命仅为90min.
Steam reforming of apricot stone pyrolysis tar for hydrogen-rich gas production is carried out over Ni-Fe/attapulgite catalysts prepared with co-precipitation method. The effects of calcination temperature
steam/carbon molar ratio
and reaction temperature on the catalytic activity of catalyst are investigated. The catalyst is characterized by SEM
BET
and XRD techniques. Three other catalysts(silicon sand
natural dolomite and Ni-based catalysts Z409)are also tested for comparison. It is shown that the Ni-Fe/attapulgite catalyst is endowed with excellent low temperature activity and anticoke ability. A 92.1% C-conv. can be obtained at 500℃
tar liquid space velocity of 0.62 h
-1
steam/carbon molar ratios of 4.3. No obvious deactivation of the catalyst is observ
ed during 5 h sequential test. Under the same conditions
the catalytic activity of the Z409 catalyst decreases significantly after 90 min reaction.
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