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Effect of the SiO2 support on the catalytic performance of Ag/ZrO2/SiO2 catalysts for the single-bed production of butadiene from ethanol

Journal Article · · Applied Catalysis B: Environmental
A ternary Ag/ZrO2/SiO2 catalyst system was studied for single-step conversion of ethanol to butadiene by varying the catalyst composition (Ag, Ir, or Pt metal component, Ag/ZrO2 loading, and choice of SiO2 support) and operating conditions (space velocity and feed gas composition). Exceptional catalytic performance was achieved over a 1%Ag/4%ZrO2/SiO2-SBA-16 catalyst leading to 99% conversion and 71% butadiene selectivity while operating under mild conditions (325°C, 1 atm, and 0.23 h–1). Several classes of silica—silica gels, fumed silicas, mesoporous silicas)—were evaluated as catalyst supports, and SBA-16 was found to be the most promising choice. The SiO2 support was found to significantly influence both conversion and selectivity. A higher SiO2 catalyst surface area facilitates increased Ag dispersion which leads to greater conversion due to the accelerated initial ethanol dehydrogenation reaction step. By independently varying Ag and ZrO2 loading, Ag was found to be the main component that affects ethanol conversion. ZrO2 loading and thus Lewis acid sites concentration was found to have little impact on the ethanol conversion. Butadiene selectivity depends on the concentration of Lewis acid site, which in turn differs depending on the choice of SiO2 support material. We observed a direct relationship between butadiene selectivity and concentration of Lewis acid sites. Butadiene selectivity decreases as the concentration of Lewis acid sites increases, which corresponds to an increase in ethanol dehydration to ethylene and diethyl ether. Additionally, adding H2 to the feed had little effect on conversion while improving catalytic stability; however, selectivity to butadiene decreased. Lastly, catalyst regenerability was successfully demonstrated for several cycles.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1439097
Alternate ID(s):
OSTI ID: 1514854
OSTI ID: 1591653
Report Number(s):
PNNL-SA--128543; PII: S0926337318304855
Journal Information:
Applied Catalysis B: Environmental, Journal Name: Applied Catalysis B: Environmental Journal Issue: C Vol. 236; ISSN 0926-3373
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (30)

Mechanistic Study of Ethanol Dehydrogenation over Silica-Supported Silver journal May 2013
Influence of Metal Doping on the Lewis Acid Catalyzed Production of Butadiene from Ethanol Studied by using Modulated Operando Diffuse Reflectance Infrared Fourier Transform Spectroscopy and Mass Spectrometry journal August 2017
Early-Stage Comparative Sustainability Assessment of New Bio-based Processes journal September 2013
Chemocatalytic Conversion of Ethanol into Butadiene and Other Bulk Chemicals journal May 2013
Design of a Metal-Promoted Oxide Catalyst for the Selective Synthesis of Butadiene from Ethanol journal August 2014
Ternary Ag/MgO-SiO 2 Catalysts for the Conversion of Ethanol into Butadiene journal March 2015
Ag-Promoted ZrBEA Zeolites Obtained by Post-Synthetic Modification for Conversion of Ethanol to Butadiene journal July 2016
One-step catalytic conversion of ethanol to butadiene in the fixed bed. II BINARY- AND TERNARY-OXIDE CATALYSTS journal March 1962
Determination of Integrated Molar Extinction Coefficients for Infrared Absorption Bands of Pyridine Adsorbed on Solid Acid Catalysts journal June 1993
Steam reforming of hydrocarbons from biomass-derived syngas over MgAl2O4-supported transition metals and bimetallic IrNi catalysts journal May 2016
Mechanistic study of ethanol conversion into butadiene over silver promoted zirconia catalysts journal October 2017
Butadiene production process overview journal March 2007
Ethylene and diethyl-ether production by dehydration reaction of ethanol over different heteropolyacid catalysts journal September 2007
Meerwein–Ponndorf–Verley–Oppenauer reaction of crotonaldehyde with ethanol over Zr-containing catalysts journal July 2014
Highly active and stable MgAl2O4-supported Rh and Ir catalysts for methane steam reforming: A combined experimental and theoretical study journal July 2014
Study of acetaldehyde condensation chemistry over magnesia and zirconia supported on silica journal December 2010
Bimetallic Zn and Hf on Silica Catalysts for the Conversion of Ethanol to 1,3-Butadiene journal May 2015
With Open Arms: Open Sites of ZrBEA Zeolite Facilitate Selective Synthesis of Butadiene from Ethanol journal July 2015
Zeolite Structural Confinement Effects Enhance One-Pot Catalytic Conversion of Ethanol to Butadiene journal April 2017
Conversion of Ethanol and Acetaldehyde to Butadiene over MgO–SiO 2 Catalysts: Effect of Reaction Parameters and Interaction between MgO and SiO 2 on Catalytic Performance journal December 2016
Conversion of Oxygen Derivatives of Hydrocarbons into Butadiene. journal February 1945
Comparative Investigation of Benzene Steam Reforming over Spinel Supported Rh and Ir Catalysts journal April 2013
Recent Advances in Catalytic Conversion of Ethanol to Chemicals journal March 2014
Butadiene from Ethanol. Reaction Mechanism journal May 1949
Review of old chemistry and new catalytic advances in the on-purpose synthesis of butadiene journal January 2014
Ethanol conversion into butadiene over Zr-containing molecular sieves doped with silver journal January 2015
Catalytic dehydration of ethanol over hierarchical ZSM-5 zeolites: studies of their acidity and porosity properties journal January 2016
Investigations into the conversion of ethanol into 1,3-butadiene journal January 2011
Sustainability assessment of novel chemical processes at early stage: application to biobased processes journal January 2012
Catalytic transformation of ethanol into 1,3-butadiene journal September 2014

Cited By (7)

The Role of the Oxygen Vacancies in the Synthesis of 1, 3‐Butadiene from Ethanol journal October 2019
Catalytic Investigation of Ag Nanostructures Loaded on Porous Hematite Cubes: Infiltrated versus Exteriors journal May 2019
Study of Ethanol/Acetaldehyde to 1,3-Butadiene Over MgO–SiO2 Catalyst: Comparative Investigation of Deactivation Behaviour Due to Carbon Deposition journal November 2019
Catalytic conversion of ethanol into butadiene over high performance LiZnHf-MFI zeolite nanosheets journal January 2019
Highly active and stable copper catalysts derived from copper silicate double-shell nanofibers with strong metal–support interactions for the RWGS reaction journal January 2019
Effect of ZnO on acid–base properties and catalytic performances of ZnO/ZrO 2 –SiO 2 catalysts in 1,3-butadiene production from ethanol–water mixture journal January 2019
Catalytic activation of ethylene C–H bonds on uniform d 8 Ir( i ) and Ni( ii ) cations in zeolites: toward molecular level understanding of ethylene polymerization on heterogeneous catalysts journal January 2019

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