AU
Authored
15 records found
Integrated CO<sub>2</sub> capture and reduction catalysis
Role of γ-Al<sub>2</sub>O<sub>3</sub> support, unique state of potassium and synergy with copper
Carbon dioxide capture and reduction (CCR) process emerges as an efficient catalytic strategy for CO2 capture and conversion to valuable chemicals. K-promoted Cu/Al2O3 catalysts exhibited promising CO2 capture efficiency and highly selective conversion to syngas (CO + H2). The dy
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Spatiotemporal operando UV–vis spectroscopy
Development and mechanistic alternation of CO oxidation on Pt/Al<sub>2</sub>O<sub>3</sub> on the reactor scale
Operando methodologies are widely used in heterogenous catalysis to understand unique state of catalyst materials emerging under specific reaction conditions and to establish catalyst structure-activity relationships. Recent studies highlight the importance of combining multiple
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Electrified Conversion of Contaminated Water to Value
Selective Conversion of Aqueous Nitrate to Ammonia in a Polymer Electrolyte Membrane Cell
The application of a polymer electrolyte membrane (PEM) electrolytic cell for continuous conversion of nitrate, one of the contaminants in water, to ammonia at the cathode was explored in the present work. Among carbon-supported metal (Cu, Ru, Rh and Pd) electrocatalysts, the Ru-
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Silica-Supported PdGa Nanoparticles
Metal Synergy for Highly Active and Selective CO<sub>2</sub>-to-CH<sub>3</sub>OH Hydrogenation
The direct conversion of CO2to CH3OH represents an appealing strategy for the mitigation of anthropogenic CO2emissions. Here, we report that small, narrowly distributed alloyed PdGa nanoparticles, prepared via surface organometallic chemistry from silica-supported GaIIIisolated s
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Catalytic Oxidative Coupling of Methane
Heterogeneous or Homogeneous Reaction?
Direct valorization of methane via oxidative coupling of methane (OCM) is an encouraging alternative to conventional oil-based processes for the production of light hydrocarbons (ethane and ethylene). Abundant, inexpensive simple oxides such as MgO and La2O3 possess the ability t
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Towards Higher NH<sub>3</sub> Faradaic Efficiency
Selective-Poisoning of HER Active Sites by Co-Feeding CO in NO Electroreduction**
Direct electroreduction of nitric oxide offers a promising avenue to produce valuable chemicals, such as ammonia, which is an essential chemical to produce fertilizers. Direct ammonia synthesis from NO in a polymer electrolyte membrane (PEM) electrolyzer is advantageous for its c
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CO<sub>2</sub> Hydrogenation on Cu/Al<sub>2</sub>O<sub>3</sub>
Role of the Metal/Support Interface in Driving Activity and Selectivity of a Bifunctional Catalyst
Selective hydrogenation of CO2 into methanol is a key sustainable technology, where Cu/Al2O3 prepared by surface organometallic chemistry displays high activity towards CO2 hydrogenation compared to Cu/SiO2, yielding CH3OH, dimethyl ether (DME), and CO. CH3OH formation rate incre
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CO<sub>2</sub> Hydrogenation on Cu/Al<sub>2</sub>O<sub>3</sub>
Role of the Metal/Support Interface in Driving Activity and Selectivity of a Bifunctional Catalyst
Selective hydrogenation of CO2 into methanol is a key sustainable technology, where Cu/Al2O3 prepared by surface organometallic chemistry displays high activity towards CO2 hydrogenation compared to Cu/SiO2, yielding CH3OH, dimethyl ether (DME), and CO. CH3OH formation rate incre
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Erratum
Silica-Supported PdGa Nanoparticles: Metal Synergy for Highly Active and Selective CO<sub>2</sub>-to-CH<sub>3</sub>OH Hydrogenation (JACS Au (2021) 1:4 (450−458) DOI: 10.1021/jacsau.1c00021)
On page 452, column 1 (lines 12?23) reads: H2 and CO chemisorption show an uptake of 0.91 molH2 molPd?1 and 0.61 molCO molPd ?1, respectively (Table 1, Supporting Information S6). Considering a 1:1 CO/Pd stoichiometry,32 the dispersion from CO chemisorption (D?CO) equals 61%, in
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Oxidative coupling of methane under microwave
Core-shell catalysts for selective C<sub>2</sub> production and homogeneous temperature control
The oxidative coupling of methane (OCM) was investigated using a catalyst with a core@shell structure or a physical mixture comprised of MgO and SiC or Fe3O4, which was thermally activated via two different heating methods, namely, conventional resistive heating and microwave hea
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From CO or CO<sub>2</sub>?
Space-resolved insights into high-pressure CO<sub>2</sub> hydrogenation to methanol over Cu/ZnO/Al<sub>2</sub>O<sub>3</sub>
The reaction pathway of high-pressure CO2 hydrogenation over a Cu/ZnO/Al2O3 catalyst is investigated through the gradients of reactants/products concentration and catalyst temperature within the catalytic reactor. This study reveals that methanol is formed through direct CO2 hydr
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Chapter 9
In Situ Spectroscopic Methods to Study Electrochemical CO<sub>2</sub>Reduction
We should not underestimate the role of in situ and operando spectroscopic techniques in increasing our level of understanding of chemical reactions. The electrochemical reduction of CO2 is not an exception. The application of analytical techniques such as infrared spectroscopy,
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Exploiting the continuity equation for mechanistic understanding through spatially resolved SSITKA-DRIFTS
The role of carbonyls in RWGS over Pt/CeO<sub>2</sub>
Insight into mechanisms of heterogeneously catalyzed reactions holds importance in the development and optimization of new catalytic materials. Yet, the approaches often used in such investigations heavily rely on assumptions concerning the reactor and kinetics. Herein we report
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Oxidative dehydrogenation of ethane (ODHE) is an essential reaction in modern society to produce ethylene. The orthorhombic Mo3VOx catalyst (MoVO) was reported as one of the best catalysts for this reaction after a particular redox treatment to generate lattice oxygen defects. Th
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Contributed
5 records found
CO<sub>2</sub> Capture and Reduction
Placing the process in an industrial framework
Capturing and utilizing the emissions of CO2 has become a method to reduce the occurring emissions from industrial flue gases. One of the methodologies to capture and use the CO2 is through the CO2 capture and reduction (CCR) process. This process uses a bi-functional catalyst to
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Electrochemical Ammonia Synthesis
Development of a Cell With a Hydrogen Permeable Electrode
Ammonia is essential for global food production as a component of fertiliser, and a potential energy carrier in the energy transition. Electrochemical ammonia synthesis faces numerous challenges as an alternative to the carbon intensive Haber-Bosch process, including competition
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Structures, activities, and mechanisms under the spectroscopes
The quest for unveiling the nature of active sites for highly selective CO2 hydrogenation to methanol
Since the industrial revolution in the 1760s, the CO2 concentration in the atmosphere has been rising incessantly driving global warming closer to the point of no return. The world requires urgent actions to not only reduce CO2 emissions but also capture the CO2 for utilization t
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Steelmaking process is a highly carbon-intensive process. This is mainly due to the use of coke as a reducing agent in the blast furnaces to produce carbon-rich pig iron, which in turn, is used for the production of low-carbon steel in the basic oxygen furnaces. The exhaust gases
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The rise of CO2 concentration in the atmosphere is a leading cause of global warming. Utilizing CO2 ob- tained from point sources, such as chemical industries, as a feedstock to produce high energy density fuels and chemicals could mitigate the emission of CO2 as well as provide
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