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Title: Characterization of MoVTeNbO x catalysts during oxidation reactions using in situ/operando techniques: A review

The domestic fossil feedstock in recent years is shifting towards light hydrocarbons due to abundance of shale gas from hydraulic fracturing. This shift induces a need for greater flexibility in both new and existing processing plants to produce consumer products (polymers, paints, lubricants, etc.) from new feedstocks. The oxidative catalytic reactions operate at milder conditions than the processing of feedstocks through steam cracking. The conversion of light feedstocks (C3 and shorter hydrocarbons) to high value chemicals through highly selective catalysts in the presence of oxygen plays a crucial role in eliminating wastes, reducing greenhouse gas emissions and lowering market prices. Among all catalysts for light hydrocarbon processing through oxidation reactions, bulk mixed metal oxides such as MoVTe(Sb)NbO x catalysts are the most promising due to their performance under favorable reaction conditions (temperature, pressure, etc). Here, state-of-the-art in situ/operando techniques along with transient kinetics can revolutionize the development of catalysts by providing information about the nature of active sites, intermediates and kinetics under realistic industrial conditions. Only through detailed understanding of these catalyst behaviors can new synthesis methods be developed that will improve reactivity, selectivity and lifetimes of these catalysts. In this review, dynamic changes of this mixed oxide catalyst duringmore » the reaction (such as changes in surface composition, oxidation states, acidity, etc) are discussed mainly from knowledge and insights obtained from these in situ/operando approaches. The most common oxidation reactions driven by the MoVTeNbO x catalysts and studied under operando/in situ conditions to be discussed here are: (1) oxidative dehydrogenation of light alkanes (ethane and propane), (2) propane ammoxidation to acrylonitrile and (3) selective oxidation of propane to acrylic acid.« less
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  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 2073-4344; CATACJ; PII: catal7040109
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Additional Journal Information:
Journal Volume: 7; Journal Issue: 4; Journal ID: ISSN 2073-4344
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
04 OIL SHALES AND TAR SANDS; 03 NATURAL GAS; M1 catalyst; operando and in situ techniques; oxidation reactions; MoVTe(Sb)NbOx; operando; oxidative; dehydrogenation; ethylene; acrylonitrile; ammoxidation; acrylic acid; in situ; characterization
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