Structural and catalytic properties of skeletal Ni catalyst prepared from the rapidly quenched Ni50Al50 alloy，成果详细信息-中国科技论文在线

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Structural and catalytic properties of skeletal Ni catalyst prepared from the rapidly quenched Ni50Al50 alloy

乔明华， Huarong Hu ， a Minghua Qiao ， a ， ∗ Shuai Wang ， a Kangnian Fan ， ∗ Hexing Li ， b Baoning Zong ， c and Xiaoxin Zhang c

Journal of Catalysis 221 (2004) 612-618，-0001，（）：

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摘要/描述

The textural and structural properties of a skeletal Ni catalyst prepared by alkali leaching of aluminum from the rapidly quenched Ni50Al50 alloy have been investigated by elemental analysis (ICP-AES), nitrogen physisorption, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and H2 thermal desorption techniques. As compared to Raney Ni, such a skeletal catalyst has a residual Ni2Al3 phase, lower surface area, higher average pore diameter and porosity, larger mean crystallite size, and unit-cell parameter. These differences are attributable to the metastable character of the pristine rapidly quenched alloy and their relationship with the catalytic behavior is discussed and correlated.

关键词: Rapid quenching ， Ni-Al alloy ， Skeletal catalyst ， Raney Ni ， Texture ， Structure ， Hydrogenation

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