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Title: Structural, surface, and catalytic properties of a new bimetallic V-Mo oxynitride catalyst for hydrodenitrogenation

Abstract

A new bimetallic V-Mo oxynitride has been synthesized by temperature-programmed reaction of a bimetallic oxide precursor with ammonia gas. The surface properties of this new catalyst are investigated with temperature-programmed reduction (TPR), CO chemisorption, and N[sub 2] physisorption. The catalytic activity of the material is measured in a three-phase trickle-bed reactor at 3.1 MPa and 643 K with model liquid reactants. The bulk characteristics of the oxynitride are studied by X-ray diffraction analysis, Raman spectroscopy, and inductively coupled plasma (ICP) analysis. The new compound, of composition V[sub 2.0]Mo[sub 1.0]O[sub 1.7]N[sub 2.4], has a face-centered cubic (fcc) metallic structure arrangement, a surface area of 74 m[sup 2] g[sup [minus]1], and a CO uptake of 167 [mu]mol g[sup [minus]1]. Its catalytic activity in hydrodenitrogenation is higher than that of the pure compounds VN and Mo[sub 2]N and a commercial Ni-Mo/Al[sub 2]O[sub 3] catalyst (Shell 324). TPR in hydrogen of the passivated oxynitride shows the formation of H[sub 2]O, N[sub 2], and NH[sub 3] during activation and thermal stability to 830 K. 29 refs., 5 figs., 2 tabs.

Authors:
 [1];  [2];  [3];  [4]
  1. Virginia Polytechnic Inst., Blaksburg, VA (United States)
  2. Clarkson Univ., Potsdam, NY (United States)
  3. Akso Nobel Central Research, Dobbs Ferry, NY (United States)
  4. Virginia Polytechnic Inst., Blacksburg, VA (United States) Clarkson Univ., Potsdam, NY (United States)
Publication Date:
OSTI Identifier:
6658333
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry; (United States)
Additional Journal Information:
Journal Volume: 98:49; Journal ID: ISSN 0022-3654
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CATALYSTS; CRYSTALLOGRAPHY; REDUCTION; SURFACE PROPERTIES; SYNTHESIS; X-RAY DIFFRACTION; MOLYBDENUM COMPOUNDS; VANADIUM COMPOUNDS; AMMONIA; CARBON MONOXIDE; CATALYSIS; CHEMICAL REACTORS; NITROGEN; RAMAN SPECTROSCOPY; WATER; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; HYDRIDES; HYDROGEN COMPOUNDS; LASER SPECTROSCOPY; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; NONMETALS; OXIDES; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; SCATTERING; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; 400201* - Chemical & Physicochemical Properties; 400102 - Chemical & Spectral Procedures

Citation Formats

Yu, C C, Ramanathan, S, Sherif, F, and Oyama, S T. Structural, surface, and catalytic properties of a new bimetallic V-Mo oxynitride catalyst for hydrodenitrogenation. United States: N. p., 1994. Web. doi:10.1021/j100100a036.
Yu, C C, Ramanathan, S, Sherif, F, & Oyama, S T. Structural, surface, and catalytic properties of a new bimetallic V-Mo oxynitride catalyst for hydrodenitrogenation. United States. https://doi.org/10.1021/j100100a036
Yu, C C, Ramanathan, S, Sherif, F, and Oyama, S T. Thu . "Structural, surface, and catalytic properties of a new bimetallic V-Mo oxynitride catalyst for hydrodenitrogenation". United States. https://doi.org/10.1021/j100100a036.
@article{osti_6658333,
title = {Structural, surface, and catalytic properties of a new bimetallic V-Mo oxynitride catalyst for hydrodenitrogenation},
author = {Yu, C C and Ramanathan, S and Sherif, F and Oyama, S T},
abstractNote = {A new bimetallic V-Mo oxynitride has been synthesized by temperature-programmed reaction of a bimetallic oxide precursor with ammonia gas. The surface properties of this new catalyst are investigated with temperature-programmed reduction (TPR), CO chemisorption, and N[sub 2] physisorption. The catalytic activity of the material is measured in a three-phase trickle-bed reactor at 3.1 MPa and 643 K with model liquid reactants. The bulk characteristics of the oxynitride are studied by X-ray diffraction analysis, Raman spectroscopy, and inductively coupled plasma (ICP) analysis. The new compound, of composition V[sub 2.0]Mo[sub 1.0]O[sub 1.7]N[sub 2.4], has a face-centered cubic (fcc) metallic structure arrangement, a surface area of 74 m[sup 2] g[sup [minus]1], and a CO uptake of 167 [mu]mol g[sup [minus]1]. Its catalytic activity in hydrodenitrogenation is higher than that of the pure compounds VN and Mo[sub 2]N and a commercial Ni-Mo/Al[sub 2]O[sub 3] catalyst (Shell 324). TPR in hydrogen of the passivated oxynitride shows the formation of H[sub 2]O, N[sub 2], and NH[sub 3] during activation and thermal stability to 830 K. 29 refs., 5 figs., 2 tabs.},
doi = {10.1021/j100100a036},
url = {https://www.osti.gov/biblio/6658333}, journal = {Journal of Physical Chemistry; (United States)},
issn = {0022-3654},
number = ,
volume = 98:49,
place = {United States},
year = {1994},
month = {12}
}