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Citation: Zhang Yao-Jun, Xin Qin. Studies on Differential Heats H₂ Adsorption over γ-Mo₂N Catalysts by Microcalorimetry[J]. Acta Physico-Chimica Sinica, ;2000, 16(05): 464-467. doi: 10.3866/PKU.WHXB20000518 shu

Studies on Differential Heats H₂ Adsorption over γ-Mo₂N Catalysts by Microcalorimetry

Zhang Yao-Jun ,
Xin Qin

1.
Petroleum Engineering Department,Xi'an Petroleum Institute,Xi'an 710065

Received Date: 27 July 1999
Available Online: 15 May 2000

Differential heats of H 2 adsorption on γ-Mo2N catalysts were studied by using microcalorimetry. Samples with high and medium surface areas (90 and 17 m2•g -1 ) present a homogeneous energetic distribution of surface sites, which corresponds with the preferential orientation of their (200) planes. Molybdenum nitride with low surface area (8 m2•g -1 ) displays a heterogeneous energetic distribution of H 2 adsorption sites. The higher initial differential heat of hydrogen adsorption observed for the low surface Mo nitride was attributed to species adsorbed on surface sites associated with the (111) plane.
- γ-Mo₂N,
- Microcalorimetry,
- Differential heat of H₂ adsorption
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Studies on Differential Heats H₂ Adsorption over γ-Mo₂N Catalysts by Microcalorimetry