An efficient carboesterification of alkenes with anhydrides promoted by MnO2 has been developed to afford functionalized γ-lactones in good to excellent yields. This method shows a broad substrate scope and provides a valuable and convenient synthetic tool for constructing γ-lactones.

MnO2 is the most favorable material in power storage due to its technological significance and potential applications pseudocapacitance (due various oxidative states allowing efficient charge transfer meet energy demands), where properties are considerably influenced by structure surface morphology. In present study, a facile hydrothermal route was used produce different phases of (α, β, γ) wit...

The preparation of four kinds α-, β-, γ-, and δ-type MnO2 with distinct crystal phases tunnel structures were achieved applied for 1,2-dichloroethane (1,2-DCE) catalytic combustion. redox...

In this era, most technology requires electronic equipment. The performance of equipment may be affected by energy storage components like a supercapacitor, so the development supercapacitor electrode materials using green chemical methods needs to pursued. Material with good specific capacitance is MnO2. Most MnO2 synthesis are not based on chemistry, there an alternative method. One them util...

A series of experiments were performed for toluene decomposition from a gaseous influent at normal temperature and atmospheric pressure by nonthermal plasma coupled with a combination of catalysts technology. Nonthermal plasma was generated by dielectric barrier discharge. γ-Al2O3 was used to be a sorbent and a catalyst carrier. Nanocatalysts were MnO2/γ-Al2O3 coupled with modified ferroelectri...

In the science and technology of electrochemical energy storage, different allotropes MnO2, fabricated with a variety methods, are assembled into electrodes, playing role cathode or ORR electrocatalyst. Often, MnO2-based cathodes combined Zn anodes types batteries, resulting in contact between MnO2 its reaction products, Zn2+. Awareness is growing that this interaction adversely affects functio...

In this work, a coaxial dielectric barrier discharge (DBD) reactor was constructed to degrade the mixture of toluene and o-xylene, two typical benzene series. The Cu-MnO2/γ-Al2O3 series catalysts prepared by redox impregnation methods were filled into plasma device VOCs synergistically explore degradation effect. experimental results showed that introduction Cu-doped MnO2 catalyst significantly...

Leptin is a hormone synthesized by adipocytes and other tissues, including the placenta, and it regulates food intake and energy expenditure, reproductive and immune functions. To investigate the role of leptin in neonatal immunity, we measured serum leptin and cytokine (IFN-γ, TNF-α, IL-2, IL-4, IL-10, IL-12) levels in the cord blood (cb) of 510 healthy neonates, 14 small for gestational age (...