摘要
采用反相微乳液法制备了体相型纳米Ni-Mo复合氧化物催化剂,用X-射线衍射、N_2吸附-脱附、SEM等手段对催化剂进行了表征。以催化环丁砜加氢脱氧合成四氢噻吩为探针反应,考察了体系组成对Ni-Mo复合氧化物催化剂结构及选择性加氢脱氧催化性能的影响。结果表明:采用环己烷/CTAB/正丁醇/水溶液反相微乳液体系可制备具有双介孔结构的纳米Ni-Mo复合氧化物催化剂,颗粒尺寸达40nm;制备过程中Ni和Mo发生相互作用,形成了复合氧化物NiMoO_4。以水/CTAB/正丁醇/环己烷为反相微乳体系,氨水浓度为14mol/L,n(H_2O)/n(CTAB)=15,m(正丁醇)/m(CTAB)=0.8的条件下所制备的催化剂具有较高的比表面积和孔容,在缓和的条件下具有良好选择性加氢脱氧性能。
Ni-Mo bulk nanocatalysts were prepared by a reverse microemulsion technique, and characterized by XRD, N2 adsorption-desorption and SEM. The effects of the system constituents on the texture properties and selective hydrodeoxygenation （HDO） activity of the Ni-Mo oxide composites were investigated by using sulfolane hydrodeoxygenation as a probe reaction. The results show that the Ni-Mo oxide composites catalysts prepared by reverse microemulsion technique could possess the nanostructure and the double-mesoporous structure, and the particle size of the catalysts is 40nm. NiMoO4 is formed in the unsupported catalysts. In water/CTAB/n-butyl alcohol/cyclohexane reverse microemulsion system, the nano-catalyst with a high specific surface area and pore volume and excellent HDO performance is obtained at the preparation conditions： ammonia concentration of 10mol/L, water/CTAB molar ratio of 15, and n-butyl alcohol/CTAB mass ratio of 0.8.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2018年第1期78-84,共7页
Natural Gas Chemical Industry
基金
广西高校科研项目(KY015YB278)
百色学院重点科研项目(2014KA01)
