Details

Autor(en) / Beteiligte

• Chen, Zhi-hao
• Chao, Wei
• Feng, Yi
• Jin, Lu
• Zhu, Yan-chao
• Yang, Xiao-min
• Wang, Zi-chen

Titel

Preparation of Ni-rice husk carbon catalysts for the hydrodeoxygenation of vanillin

Ist Teil von

• Xinxing Tancailiao = New Carbon Materials, 2018-10, Vol.33 (5), p.417

Ort / Verlag

Taiyuan: Chinese Academy of Sciences

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Ni-rice husk carbon catalysts with Ni loadings from 2 to 8 w t% were prepared by impregnating rice husk activated carbon with Ni( NO3)2·6 H2 O solutions,followed by carbothermal reduction at temperatures from 500 to 950 ℃. The valance,particle size and dispersion of nickel nanoparticles on the carbon,the graphitization extent of the carbon,and the pore structure of the catalysts were investigated by XRD,TEM,Raman spectroscopy and nitrogen adsorption. The activity and selectivity of the catalysts for the hydrodeoxygenation of vanillin to 2-methoxy-4-methylphenol were evaluated. Results indicate that by increasing the carbothermal reduction temperature,the specific surface area and micropore volume decrease,mesopore volume and average pore size increase,nickel particle size increases and the( 002) peak of carbon appears and becomes sharp above 900 ℃. The selectivity of all catalysts investigated is 100%. The catalytic activity is closely related to the Ni content and its dispersion on the carbon. A high Ni load