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Energy saving and emission reduction have always been the goal of separation and catalysis pursued in industrial production. Metal-organic frameworks (MOFs) are leading porous crystal materials with unique advantages in these fields. Based on an amide-modified ligand 5-(ethyl oxamate)-isophthalic acid (HEtL), a new porous indium-organic framework (MeNH)[InL]·2DMF·2HO () was synthesized and structurally characterized. The unique porous environment gives it dual functional advantages in separation and catalysis. At room temperature, possesses excellent adsorption capacities for C hydrocarbons and CO, showing good separation behaviors for C hydrocarbons/CO on CH and CH on CO, which is conducive to efficient purification of CH and CH confirmed by the breakthrough experiment. Meanwhile, catalytic results indicate that can be used as a good catalyst for effective fixation of CO under mild conditions to form cyclic carbonates.
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http://dx.doi.org/10.1021/acs.inorgchem.1c03821 | DOI Listing |
Small
December 2024
College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, People's Republic of China.
The conversion of biomass into chemical fuels is exciting but quite challenging in the development of an effective conversion strategy to generate easily-separated products without energy consumption. Herein, a lignocellulosic biomass-to-H conversion system via photo-thermal catalysis over MoC hierarchical nanotube catalysts in an acidic solution, in which the lignocellulose is hydrolyzed to small organic molecules (such as glucose, etc) by dilute HSO, and then the resulting glucose is oxidized by MoC catalyst to generate H are reported. During the photo-thermal catalytic processes, the carbon vacancy in MoC catalysts results in the generation of undercoordinated Mo sites, which act as active sites for both biomass oxidation and H generation reactions.
View Article and Find Full Text PDFAdv Mater
December 2024
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu Road, Nanjing, 211816, P. R. China.
Crystalline membranes, represented by the metal-organic framework (MOF) with well-defined angstrom-sized apertures, have shown great potential for molecular separation. Nevertheless, it remains a challenge to separate small molecules with very similar molecular size differences due to angstrom-scale defects during membrane formation. Herein, a stepwise assembling strategy is reported for constructing MOF membranes with intrinsic angstrom-sized lattice aperture lattice to separate organic azeotropic mixtures separation.
View Article and Find Full Text PDFSmall
December 2024
Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, P. R. China.
In recent years, single-atom catalysts (SACs) with separated active centers and high atom utilization have grown significantly as a significant area of catalytic research. In catalytic applications, SACs of various kinds have demonstrated exceptional performance, so the study of the catalytic mechanism of SACs provides a clearer direction for the preparation of catalysts with high performance. Strong linkages between the single atoms and the support are necessary to overcome the tendency of single atoms to aggregate into clusters, which is called metal-support interaction (MSI).
View Article and Find Full Text PDFInorg Chem
December 2024
State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, PR China.
Piezoelectric catalytic production of HO is a novel and environmentally friendly HO production method, and many piezoelectric catalysts are currently being developed. However, all of them have the disadvantages of precious metals as cocatalysts and low catalytic efficiency. Herein, CaTiO was successfully prepared and loaded with the nonprecious metal CoP (CoP/CaTiO) for piezoelectric catalytic production of HO.
View Article and Find Full Text PDFEnviron Sci Technol
December 2024
Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemical Engineering and Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
Chlorinated and oxygenated volatile organic compounds (CVOCs and OVOCs) pose a significant threat to human health. Catalytic oxidation effectively removes these pollutants, but catalyst deactivation is a challenge. Our study focused on the hydrolysis oxidation of chlorobenzene (CB) and ethyl acetate (EA) over Ru/MO/HZSM-5 (M = W, Mo).
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