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Enhanced Catalytic Properties of Molybdenum Promoted Mesoporous Cobalt Oxide: Structure-Surface-Dependent Activity for Selective Synthesis of 2-Substituted Benzimidazoles

Journal Article · · ChemCatChem
 [1];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Univ. of Connecticut, Storrs, CT (United States); Univ of Connecticut
  2. Univ. of Connecticut, Storrs, CT (United States)
+ Show Author Affiliations
High-valent molybdenum ions were substituted into the cobalt oxide lattice through a one step, sol-gel method and investigated for selective synthesis of 2-substituted benzimidazoles. Catalyst synthesis involves surfactant assisted soft templating inverse micelle method, which forms mesopores by interconnected intraparticle voids. Substitutional doping of Mo6+ resulted in materials with modified structural, morphological, surface, and redox properties. The catalytic activity increased with Mo concentration until an optimum amount (3 % Mo incorporation). Modified material shows lattice expansion, increased surface oxygen vacancies, and high surface area, which are responsible for the higher catalytic activity in selective benzimidazole synthesis reaction. A strong correlation between surface properties of the catalyst and the product selectivity was observed and plausible mechanistic and kinetic data are proposed and collected, respectively.
Research Organization:
Univ. of Connecticut, Storrs, CT (United States)
Sponsoring Organization:
NSF; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
FG02-86ER13622
OSTI ID:
1598164
Journal Information:
ChemCatChem, Journal Name: ChemCatChem Journal Issue: 1 Vol. 11; ISSN 1867-3880
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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Copper(II) Oxide Nanoparticles Impregnated on Melamine‐Modified UiO‐66‐NH 2 Metal–Organic Framework for C–N Cross‐Coupling Reaction and Synthesis of 2‐Substituted Benzimidazoles journal August 2019

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Related Subjects

2-substituted benzimidazoles
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
lattice expansion
mesoporous materials
molybdenum substitution
surface oxygen vacancies