Phase Engineering of Zirconia Support Promotes the Catalytic Dehydrogenation of Formic Acid by Pd Active Sites.

The development of Pd-based catalysts with outstanding activity and stability can further promote the hydrogen storage application of formic acid (FA). Regulating the support structure is an effective strategy for enhancing active sites in heterogeneous catalytic systems. This study prepared three types of nanosized ZrO through phase engineering to support Pd metal and investigated the implications of support structure on the microenvironment of active sites, thus revealing the structure-activity relationship of the catalysts.

Electron-rich SnO promote CO activation for stable electrocatalytic CO reduction.

Electrocatalytic CO reduction reaction (CORR) to formate offers a promising route for carbon neutralization, but its reactivity is largely compromised due to the competitive hydrogen evolution reaction (HER) accompanying the activation of CO at high potentials. Herein, we modulated the charge density around Sn atoms by introducing LaSnO into SnO, with the rich grain boundaries and fast electron transport of the heterostructure promoting CO reduction. Combined theoretical calculations and in situ electrochemical attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) characterization revealed enhanced activation of CO and adsorption of *OCHO intermediates by the constructed electron-rich SnO.

Degradation Characteristics of Nicosulfuron in Water and Soil by MnO Nano-Immobilized Laccase.

As a typical sulfonylurea herbicide, nicosulfuron is mainly used to control grass weeds and some broadleaf weeds in corn fields. However, as the amount of use continues to increase, it accumulates in the environment and eventually becomes harmful to the ecosystem. In the present study, a new metallic nanomaterial, δ-MnO, was prepared, which not only has a similar catalytic mechanism as laccase but also has a significant effect on pesticide degradation.

Toxicological Analysis of Acetamiprid Degradation by the Dominant Strain Md2 and Its Effect on the Soil Microbial Community.

Microbial degradation is acknowledged as a viable and eco-friendly approach for diminishing residues of neonicotinoid insecticides. This study reports the dominant strain of Md2 that degrades acetamiprid was screened from soil and identified as , and the optimal degradation conditions were determined. Research indicated that the degradation of Md2 to 100 mg/L acetamiprid was 55.

Construction of Immobilized Laccase System Based on ZnO and Degradation of Mesotrione.

Mesotrione (MES) is a new environmental pollutant. Some reports have indicated that microbial enzymes could be utilized for MES degradation. Laccase is a green biocatalyst whose potential use in environmental pollutant detoxification has been considered limited due to its poor stability and reusability.

Preparation of white rot fungal inoculum and its application to bioremediation of chlorimuron-ethyl-contaminated soil.

Chlorimuron-ethyl is currently the primary herbicide used for chemical weed control in a soybean field. In this study, a solid microbial inoculum (corn stalk-white rot fungus (W-1)) was prepared for the remediation of farmland soil contaminated by chlorimuron-ethyl. Firstly, the preparation method of the microbial inoculum was studied.

Zn promoted GaZrO Ternary Solid Solution Oxide Combined with SAPO-34 Effectively Converts CO to Light Olefins with Low CO Selectivity.

We proposed a new strategy for CO hydrogenation to prepare light olefins by introducing Zn into GaZrO to construct ZnGaZrO ternary oxides, which was combined with SAPO-34 to prepare a high-performance ZnGaZrO/SAPO-34 tandem catalyst for CO hydrogenation to light olefins. By optimizing the Zn doping content, the ratio and mode of the two-phase composite, and the process conditions, the 3.5 %ZnGaZrO/SAPO-34 tandem catalyst showed excellent catalytic performance and good high-temperature inhibition of the reverse water-gas shift (RWGS) reaction.

Dual Strategies with Anion/Cation Co-Doping and Lithium Carbonate Coating to Enhance the Electrochemical Performance of Lithium-Rich Layered Oxides.

Lithium-rich layered oxides (LLOs, Li Mn Ni Co O ) are widely used as cathode materials for lithium-ion batteries due to its high specific capacity, high operating voltage and low cost. However, the LLOs are faced with rapid decay of charge/discharge capacity and voltage, as well as interface side reactions, which limit its electrochemical performance. Herein, the dual strategies of sulfite/sodium ion co-doping and lithium carbonate coating were used to improve it.

Uncovering the role of yttrium in a cerium-based binary oxide in the catalytic conversion of carbon dioxide and methanol to dimethyl carbonate.

Cerium(IV) oxide (CeO)-based materials are effective catalysts for the synthesis of dimethyl carbonate (DMC) from carbon dioxide (CO) and methanol (CHOH). Herein, 5% Y-CeO was synthesized by the co-precipitation method. It forms a solid solution structure, which leads to the highest concentration of oxygen vacancies.

A Review of Oil-Solid Separation and Oil-Water Separation in Unconventional Heavy Oil Production Process.

Unconventional heavy oil ores (UHO) have been considered an important part of petroleum resources and an alternative source of chemicals and energy supply. Due to the participation of water and extractants, oil-solid separation (OSS) and oil-water separation (OWS) processes are inevitable in the industrial separation processes of UHO. Therefore, this critical review systematically reviews the basic theories of OSS and OWS, including solid wettability, contact angle, oil-solid interactions, structural characteristics of natural surfactants and interface characteristics of interfacially active asphaltene film.

Electrochemical Properties of an Sn-Doped LATP Ceramic Electrolyte and Its Derived Sandwich-Structured Composite Solid Electrolyte.

An LiAlSnTi(PO) (LATP-xSn) ceramic solid electrolyte was prepared by Sn doping via a solid phase method. The results showed that adding an Sn dopant with a larger ionic radius in a concentration of x = 0.35 enabled one to equivalently substitute Ti sites in the LATP crystal structure to the maximum extent.

Role of Zirconia in Oxide-Zeolite Composite for Thiolation of Methanol with Hydrogen Sulfide to Methanethiol.

In this paper, the molecular sieve NaZSM-5 was modified with zirconium dioxide (ZrO) by a hydrothermal coating process and other methods. By comparing the effects of the crystal phase structure of ZrO and the compositing method on the physicochemical properties and catalytic performance of the obtained composites, the structure-performance relationship of these composite catalysts was revealed. The results indicate that in the hydrothermal system used for the preparation of NaZSM-5, Zr is more likely to dissolve from m-ZrO than from t-ZrO, which can subsequently enter the molecular sieve, causing a greater degree of desiliconization of the framework.

Enhanced Catalytic Performance of N-Doped Carbon Sphere-Supported Pd Nanoparticles by Secondary Nitrogen Source Regulation for Formic Acid Dehydrogenation.

The development of catalysts with high selectivity, good catalytic activity, and excellent cycle performance is of significance for the application of formic acid (HCOOH, FA) as a hydrogen support. Herein, Pd is deposited on a series of N-doped carbons, which are prepared by cocarbonization of N-containing zeolite imidazole frameworks (ZIF-8) and other N/C sources (melamine, xylitol, urea, and glucose), for hydrogen generation from FA. The results demonstrate that the introduction of a secondary N/C source further affects the catalytic performance of Pd by adjusting the morphology, specific surface area, N content, and type of carbon.

Facile Synthesis of Microporous Carbons from Biomass Waste as High Performance Supports for Dehydrogenation of Formic Acid.

Formic acid (FA) is found to be a potential candidate for the storage of hydrogen. For dehydrogenation of FA, the supports of our catalysts were acquired by conducting ZnCl treatment and carbonation for biomass waste. The texture and surface properties significantly affected the size and dispersion of Pd and its interaction with the support so as to cause the superior catalytic performance of catalysts.

and Ripening Modulate Vivipary during Tomato Fruit Development.

Vivipary, wherein seeds germinate prior to dispersal while still associated with the maternal plant, is an adaptation to extreme environments. It is normally inhibited by the establishment of dormancy. The genetic framework of vivipary has been well studied; however, the role of epigenetics in vivipary remains unknown.