The successive hydrogenation of CO has been investigated by two methods. The first is hydrogenation of a CO surface. The second is co-injection of CO molecules and H atoms. Both methods have been performed at 3 and 10 K. In the first method, the interaction of H atoms with solid CO at 10 K shows that CO is consumed to form H(2)CO and CH(3)OH. No trace of species such as HCO and CH(3)O is detected. No product was observed when the same experiment was performed at 3 K. In the second method, when H and CO are codeposited at 10 K, HCO and CH(3)O are observed. In fact, the yield of these intermediate species depends on the amount of the H radicals interacting with CO molecules. At 3 K, the presence of H(2) in the solid screens the hydrogenation reaction. This causes a termination for the reaction in the stage of the formation of HCO and H(2)CO. At 10 K, H(2) cannot condense, and the reaction between CO and H is total. In this case, species such as HCO, H(2)CO, CH(3)O, and CH(3)OH are observed.
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http://dx.doi.org/10.1021/jp909600q | DOI Listing |
Nat Chem
January 2025
TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry and Catalysis Research Center, Technical University of Munich, Garching, Germany.
The exploration of ligated metal clusters' chemical space is challenging, partly owing to an insufficiently targeted access to reactive clusters. Now, dynamic mixtures of clusters, defined as living libraries, are obtained through organometallic precursor chemistry. The libraries are populated with interrelated clusters, including transient and highly reactive ones, as well as more accessible but less reactive species.
View Article and Find Full Text PDFEnviron Res
January 2025
Ministry of Ecology and Environment South China Institute of Environmental Sciences, Guangzhou 510655, China; Key Laboratory of Water Environmental Simulation and Pollution Control, Ministry of Ecology and Environment, Guangzhou 510655, China. Electronic address:
Iron-activated peroxyacetic acid (PAA) represents an innovative advanced oxidation process (AOP). However, the efficiency of PAA activation by Fe(III) is often underestimated due to the widespread assumption that Fe(III) exhibits much lower ability than Fe(II) to activate PAA. Herein, the oxidative degradation of Rhodamine B (RhB) by Fe(III)-activated PAA process was investigated, and some new insights into the performance and mechanism of the Fe(III)/PAA system were presented.
View Article and Find Full Text PDFComp Biochem Physiol Part D Genomics Proteomics
January 2025
Fishery collage, Guangdong Ocean University, 524088 Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang 524088, China; Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Zhanjiang 524033, China. Electronic address:
Biomineralization to fabricate diverse morphology shell is typical character of bivalve species and ectopic calcification to form is the production of defense. Long non-coding RNAs (LncRNAs) plays critical roles in multiple cellular biological processes in invertebrate and vertebrate. However, LncRNAs remain poorly understood about expression and regulation roles in bivalve biomineralization studies.
View Article and Find Full Text PDFRSC Adv
January 2025
Department of Chemistry, Chung-Ang University 84 Heukseok-ro, Dongjak-gu Seoul Republic of Korea
The C chemical species, potassium formate (K(HCO)), known as a two-electron reducing agent, finds application in the synthesis of multi-carbon compounds, including oxalate, and plays a crucial role not only in the food and pharmaceutical industries but also across various sectors. However, the direct hydrogenation of CO to produce K(HCO) remains a challenge. Addressing this issue, efficient production of K(HCO) is achieved by integrating CO hydrogenation in a trickle-bed reactor using a heterogeneous catalyst with a novel separation method that utilizes potassium ions from biomass ash for formic acid derivative product isolation.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Nanning 530004, China. Electronic address:
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