Theoretical screening of single-atom catalysts (SACs) on MoTiCO MXene for methane activation.

Producing value-added chemicals and fuels from methane (CH) under mild conditions efficiently utilizes this cheap and abundant feedstock, promoting economic growth, energy security, and environmental sustainability. However, the first CH bond activation is a significant challenge and requires high energy. Efficient catalysts have been sought for utilizing CH at low temperatures including emerging single-atom catalysts (SACs).

Correlating the effect of preparation methods on the structural and magnetic properties, and reducibility of CuFeO catalysts.

CuFeO spinel oxide has attracted research interest because of its versatile practical applications, especially for catalysis. In this study, nanometre-sized CuFeO particles were prepared by three different methods, including nanospace confinement in SBA-15, hard template removal, and sol-gel combustion. The relationship between structure, size, magnetic behaviour, and reducibility of the catalysts was further investigated by various advanced techniques.

Poisoning-Resistant NO Reduction in the Presence of Alkaline and Heavy Metals over H-SAPO-34-Supported Ce-Promoted Cu-Based Catalysts.

Selective catalytic reduction (SCR) of NO using NH in the presence of alkaline and heavy metals is still an issue in the application of a stationary source. Reported here is the rational design of a novel H-SAPO-34-supported ceria-promoted copper-based catalyst (CuCe/H-SAPO-34) that demonstrates exceptional resistance against alkali (K), alkaline earth (Ca), and heavy metal (Pb) poisoning during SCR of NO. The H-SAPO-34 support contained numerous acid sites that allowed Cu-based catalysts to maintain their catalytic activity while also resisting poisoning by K and Ca.

Preparation and electrochemical performance of nitrogen-enriched activated carbon derived from silkworm pupae waste.

In this study, nitrogen-enriched activated carbon from silkworm pupae waste (P-AC) was successfully prepared and its electrochemical performances in aqueous and organic electrolytes were investigated. Silkworm pupae waste is beneficial because it is a nitrogen-enriched, inexpensive, and locally available material. The preparation process includes hydrothermal treatment of the silkworm pupae waste at 200 °C, and chemical activation using zinc chloride at activation temperatures of 700, 800 and 900 °C (P700, P800, and P900, respectively).

Dual Promotional Effects of TiO-Decorated Acid-Treated MnO Octahedral Molecular Sieve Catalysts for Alkali-Resistant Reduction of NO .

Alkali metals generated during waste incineration in power stations are not conducive to the control of nitrogen oxide (NO ) emission. Hence, improved selective catalytic reduction of NO with ammonia (NH-SCR) in the presence of alkali metals is a major issue for practical NO removal. In this work, we developed a novel TiO-decorated acid-treated MnO octahedral molecular sieve (OMS-5(H)@TiO) catalyst with improved alkali-resistant NO reduction at low temperature, and the dual promotional effects of OMS-5(H)@TiO catalysts were clarified.

Development of tailor-made synergistic cellulolytic enzyme system for saccharification of steam exploded sugarcane bagasse.

Designing a tailor-made synergistic system is a promising strategy for developing an effective enzyme for saccharification of lignocellulosic materials. In this study, a cellulolytic enzyme mixture comprising selected core recombinant enzymes for hydrolysis of sugarcane bagasse pretreated by alkaline-catalyzed steam explosion was optimized using a mixture design approach. The optimized enzyme system comprised a cellobiohydrolase (Cel7A) from Talaromyces cellulolyticus, an endo-glucanase (Cel7B) from Thielavia terrestris, a β-glucosidase (BGL) and an endo-β1,4-xylanase (XYN) from Aspergillus aculeatus at the ratio of 0.