Results 231 to 240 of about 5,008,445 (258)

A Bifunctional CdS/MoO2/MoS2 Catalyst Enhances Photocatalytic H2 Evolution and Pyruvic Acid Synthesis.

Angewandte Chemie, 2022
The best use of photogenerated electrons and holes is crucial to boosting photocatalytic activity. Herein, a bifunctional dual-cocatalyst-modified photocatalyst is constructed based on CdS/MoO2 /MoS2 hollow spheres for hydrogen evolution coupled with ...
Chuanbiao Bie, Bicheng Zhu, Linxi Wang, Huogen Yu, Chenhui Jiang, Tao Chen, Jiaguo Yu   +6 more
semanticscholar   +1 more source

Boosted oxidative dehydrogenation of lactic acid into pyruvic acid on polyvinylpyrrolidone modified Fe2O3.

Chemical Communications, 2023
We propose a novel strategy for the synthesis of pyruvic acid from bio-lactic acid in air. Polyvinylpyrrolidone can regulate the growth of the crystal face and formation of oxygen vacancies, in which a synergy of the facet and vacancies boosted the ...
Zhendi Jia, Congming Tang, Kai Ma, Xinli Li   +3 more
semanticscholar   +1 more source

The facet-regulated oxidative dehydrogenation of lactic acid to pyruvic acid on α-Fe2O3

, 2021
We propose a highly active α-Fe2O3 catalyst for the oxidative dehydrogenation of lactic acid to value-added pyruvic acid in air. The activity is determined by the utilized crystal face, due to the different adsorption energies of lactic acid molecules on
Chunyu Yin, Xinli Li, Yunsheng Dai, Zhi Chen, Dingfeng Yang, Ruixue Liu, Weixin Zou, Congming Tang, Lin Dong   +8 more
semanticscholar   +1 more source

Modeling the Reaction Kinetics of Multiconformational Molecules: Gas Phase Reactions of Pyruvic Acid with OH-Radicals.

Journal of Physical Chemistry A, 2020
The gas phase reaction of pyruvic acid with the OH-radical is studied theoretically using accurate quantum chemistry and transition state theory. Two chemically distinct H-atom abstraction reactions and two distinct OH addition reactions have been ...
J. Church, V. Vaida, R. T. Skodje
semanticscholar   +1 more source

The Impact of pH and NaCl and CaCl2 Salts on the Speciation and Photochemistry of Pyruvic Acid in the Aqueous Phase.

Journal of Physical Chemistry A, 2020
Recent studies have shown that pyruvic acid can produce higher-molecular-weight compounds upon irradiation in the aqueous phase. These compounds can contribute to the formation of secondary organic aerosols.
Man Luo, D. Shemesh, M. N. Sullivan, M. R. Alves, Meishi Song, R. Gerber, V. Grassian   +6 more
semanticscholar   +1 more source

Conformer Specific Photolysis of Pyruvic Acid and the Effect of Water.

Journal of Physical Chemistry A, 2020
The conformer specific reactivity of gas-phase pyruvic acid following the S1 (nπ*) ← S0 excitation at λmax = 350 nm (290-380 nm) and the effect of water is investigated for the two lowest energy conformers.
Sandra L. Blair, Allison E. Reed Harris, Benjamin N. Frandsen, H. Kjaergaard, E. Pangui, M. Cazaunau, J. Doussin, V. Vaida   +7 more
semanticscholar   +1 more source

Absorption spectra of pyruvic acid in water: insights from calculations for small hydrates and comparison to experiment.

Physical Chemistry, Chemical Physics - PCCP, 2020
Pyruvic acid is abundant in the atmosphere and in seawater, being a decay product of living organisms. Although very small in size (10 atoms), pyruvic acid exhibits conformational complexity in the gas phase and in solution, which is reflected in the UV ...
D. Shemesh, Man Luo, V. Grassian, R. Gerber   +3 more
semanticscholar   +1 more source

Direct Photoreforming of Real-World Polylactic Acid Plastics into Highly Selective Value-Added Pyruvic Acid under Visible Light.

Journal of the American Chemical Society
Although polylactic acid (PLA) represents a pivotal biodegradable polymer, its biodegradability has inadvertently overshadowed the development of effective recycling techniques, leading to the potential wastage of carbon resources.
Yingxuan Miao, Yunxuan Zhao, Junyu Gao, Jinhu Wang, Tierui Zhang   +4 more
semanticscholar   +1 more source

Heterogeneous Interactions between Gas-Phase Pyruvic Acid and Hydroxylated Silica Surfaces: A Combined Experimental and Theoretical Study.

Journal of Physical Chemistry A, 2019
The adsorption of gas-phase pyruvic acid (CH3COCOOH) on hydroxylated silica particles has been investigated at 296 K using transmission Fourier transform infrared (FTIR) spectroscopy and theoretical simulations. Under dry conditions (
Yuan Fang, Dominika Lesnicki, K. Wall, M. Gaigeot, M. Sulpizi, V. Vaida, V. Grassian   +6 more
semanticscholar   +1 more source

Chemistry and Photochemistry of Pyruvic Acid Adsorbed on Oxide Surfaces.

Journal of Physical Chemistry A, 2019
The surface chemistry and photochemistry of gas-phase pyruvic acid (CH3COCOOH) on two oxides, Al2O3 and TiO2, have been investigated using transmission Fourier Transform Infrared (FTIR) Spectroscopy and mass spectrometry.
M. R. Alves, Yuan Fang, K. Wall, V. Vaida, V. Grassian   +4 more
semanticscholar   +1 more source