ENZYME BIOCATALYSIS IN ORGANIC SYNTHESIS

The factor that makes enzyme biocatalysts for organic synthesis both fascinating and challenging from a scientific standpoint is the field's higher interdisciplinarity, and which necessitates expertise from a wide range of disciplines, including microbiology, organic synthesis, molecular biology, genetics, and reaction engineering. Enzymes can now carry out a wide variety of organic reactions, including hydrolytic reactions, redox reactions, and C-C bond formations, with higher performance. Enzyme catalysis has also evolved into a widely used manufacturing technology in the chemical industry, especially in the fields of fine organic chemicals and pharmaceuticals. More advances in molecular modeling for enzyme-catalysis syntheses are expected, allowing for a greater number of biocatalytic techniques based on the enzymes that have been optimized or engineered by rationalized protein engineering. The organic chemists mostly have successfully used these custom-made biocatalysts (the isolated pure enzymes, the recombinant genetically modified microorganisms, also known as the designer cells), an important milestone in the enzyme catalysis process in organic synthesis is into generally accepted synthetic technology for academia as well as industries.

Methane Production from H2 + CO2 Reaction: An Open Molecular Science Case for Computational and Experimental Studies

The article illustrates the synergy between theoretical/computational advances and advanced experimental achievements to pursue green chemistry and circular economy technological implementations. The specific green chemistry focus concerns the production of carbon neutral fuels by converting waste carbon dioxide into methane. Both theoretical-computational and technological means were adopted to design a functional option implementing a heterogeneous catalysis process (Paul Sabatier (PS) catalytic reduction) to convert carbon dioxide into methane, and to further drive its evolution towards the employment of an alternative homogeneous gas phase plasma assisted technology. The details of both the theoretical and the experimental components of the study are presented and discussed. Future potential developments, including industrial ones, are outlined that are also from innovative collaborative economic prosumer model perspectives.

A Novel Preparation of Mn/NiCo2O4 Catalyst with High Catalytic Activity on Methane

In this paper, a Mn/NiCo2O4 catalyst was prepared for the complete oxidation of low-concentration methane. When the ratio of Mn: Co is 1:4, the catalyst has the best catalytic activity, and the best methane conversion temperature Feis 400 °C. In addition, the catalytic activity remains stable during the long-term reaction, showing adequate thermal stability. The catalyst is grown on FeCrAl alloy by hydrothermal method to complete the catalytic oxidation of methane. In the catalysis process, the Mn/NiCo2O4-FeCrAl catalyst is energized and the current is directly passed through the alloy substrate to generate Joule heat, reaching the optimal catalytic temperature for complete oxidation of methane.

Green and Efficient Synthesis of Thioureas, Ureas, Primary O-Thiocarbamates, and Carbamates in Deep Eutectic Solvent/ Catalyst Systems Using Thiourea and Urea

An efficient and general catalysis process was developed for the direct preparation of various primary O-thiocarbamates/carbamates as well as monosubstituted thioureas/ureas by using the thiourea/urea as biocompatible thiocarbonyl (carbonyl) sources....

In-plasma-catalysis for NOx degradation by Ti3+ self-doped TiO2−x/γ-Al2O3 catalyst and nonthermal plasma

TiO2−x has a smaller forbidden band width, more abundant Ti3+ and oxygen vacancies, so as to obtain a better and more stable degradation effect of NOx in plasma-catalysis process.