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Improved performance of SiO2-supported Ni3Ga intermetallic compound for deoxygenation of phenolic compounds
Catalysis Communications ( IF 3.7 ) Pub Date : 2020-03-29 , DOI: 10.1016/j.catcom.2020.106001
Xiongxiong Niu , Liwen Wang , Jixiang Chen

Ni/SiO2 and SiO2-supported Ni3Ga and Ni5Ga3 intermetallic compounds were prepared by the sol-gel method and evaluated for the hydrodeoxygenation of various phenolic compounds at 0.1 MPa. In the hydrodeoxygenation of anisole, Ni3Ga/SiO2 was more active for direct deoxygenation to benzene than the corresponding catalyst prepared by the impregnation method as well as Ni/SiO2. The anisole conversion and selectivity to benzene reached 95.1% and 92.5% on Ni3Ga/SiO2 at 300 °C and WHSV of 2 h−1, respectively. In the HDOs of cresols and guaiacol, Ni3Ga/SiO2 still more dominatingly facilitated the direct deoxygenation, while Ni/SiO2 significantly promoted the C-CH3 bond cleavage.



中文翻译:

SiO 2负载的Ni 3 Ga金属间化合物对酚类化合物脱氧性能的改善

通过溶胶-凝胶法制备Ni / SiO 2和SiO 2负载的Ni 3 Ga和Ni 5 Ga 3金属间化合物,并在0.1MPa下评价各种酚类化合物的加氢脱氧。在苯甲醚的加氢脱氧中,Ni 3 Ga / SiO 2与通过浸渍法制备的相应催化剂以及Ni / SiO 2相比,对于直接脱氧成苯更具活性。在300°C和2 h -1的WHSV下,Ni 3 Ga / SiO 2上的苯甲醚转化率和对苯的选择性分别达到95.1%和92.5%。在甲酚和愈创木酚的HDO中,Ni 3Ga / SiO 2仍然更直接地促进直接脱氧,而Ni / SiO 2显着促进C-CH 3键的裂解。

更新日期:2020-03-31
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