Steam reforming of liquefied natural gas (LNG) for hydrogen production over nickel-boron-alumina xerogel catalyst

作者：Park Seungwon; Yoo Jaekyeong; Han Seung Ju; Song Ji Hwan; Lee Eo Jin; Song In Kyu^*

来源：International Journal of Hydrogen Energy, 2017, 42(22): 15096-15106.

DOI：10.1016/j.ijhydene.2017.04.282

• Steam reforming of LNG
• Hydrogen production
• Mesoporous nickel-boron-alumina catalyst
• Epoxide-driven sol-gel method

A series of mesoporous nickel-boron-alumina xerogel (x-NBA) catalysts with different boron/nickel molar ratio (x = 0-1) were prepared by an epoxide-driven sol gel method. The effect of boron/nickel molar ratio on the catalytic activities and physicochemical properties of nickel-boron-alumina xerogel catalysts was investigated in the steam reforming of liquefied natural gas (LNG). All the mesoporous x-NBA catalysts showed similar surface area. Introduction of boron increased interaction between nickel and support. In addition, introduction of boron into x-NBA catalysts reduced methane activation energy and increased nickel surface area. Promotion of boron had a positive effect on the catalytic activity due to the increase of adsorbed methane and nickel surface area. The amount of adsorbed methane and nickel surface area exhibited volcano-shaped trends with respect to boron/nickel molar ratio. LNG conversion and hydrogen yield increased with increasing the amount of adsorbed methane and with increasing nickel surface area. Among the catalysts, 0.3-NBA, which retained the largest amount of adsorbed methane and the highest nickel surface area, showed the best catalytic performance. It was also revealed that x-NBA catalysts showed strong coke resistance during the steam reforming reaction.

• 出版日期2017-6-1