A simple matrine derivative for the facile syntheses of mesoporous zeolites ITQ-37 and ITQ-43

2019 ◽  
Vol 55 (19) ◽  
pp. 2753-2756
Author(s):  
Chuanqi Zhang ◽  
Xu Li ◽  
Xinzhu Li ◽  
Jibo Hu ◽  
Liangkui Zhu ◽  
...  
Keyword(s):  
Sophora Flavescens ◽  
Mesoporous Zeolites ◽  
Matrine Derivative

Matrine extracted from Sophora flavescens can be simply modified to afford a novel OSDA for the syntheses of mesoporous zeolites.

Phytoestrogenic activity of Sophora flavescens extract and its constituents

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
C Erdelmeier ◽  
H Hauer ◽  
E Koch
Keyword(s):  
Sophora Flavescens

Catalysts for hydrogenation of CO2 into components of motor fuels

2020 ◽  
pp. 1-18
Author(s):  
Yu.V. Bilokopytov ◽  
◽  
S.L. Melnykova ◽  
N.Yu. Khimach ◽  
◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Heterogeneous Catalysts ◽  
Fossil Fuels ◽  
Catalyst Stability ◽  
Co2 Conversion ◽  
Active Components ◽  
Synthesis Conditions ◽  
Hydrogenation Of Co2 ◽  
Mesoporous Zeolites ◽  
Motor Fuels

CO2 is a harmful greenhouse gas, a product of chemical emissions, the combustion of fossil fuels and car exhausts, and it is a widely available source of carbon. The review considers various ways of hydrogenation of carbon dioxide into components of motor fuels - methanol, dimethyl ether, ethanol, hydrocarbons - in the presence of heterogeneous catalysts. At each route of conversion of CO2 (into oxygenates or hydrocarbons) the first stage is the formation of CO by the reverse water gas shift (rWGS) reaction, which must be taken into account when catalysts of process are choosing. The influence of chemical nature, specific surface area, particle size and interaction between catalyst components, as well as the method of its production on the CO2 conversion processes is analyzed. It is noted that the main active components of CO2 conversion into methanol are copper atoms and ions which interact with the oxide components of the catalyst. There is a positive effect of other metals oxides additives with strong basic centers on the surface on the activity of the traditional copper-zinc-aluminum oxide catalyst for the synthesis of methanol from the synthesis gas. The most active catalysts for the synthesis of DME from CO2 and H2 are bifunctional. These catalysts contain both a methanol synthesis catalyst and a dehydrating component, such as mesoporous zeolites with acid centers of weak and medium strength, evenly distributed on the surface. The synthesis of gasoline hydrocarbons (≥ C5) is carried out through the formation of CO or CH3OH and DME as intermediates on multifunctional catalysts, which also contain zeolites. Hydrogenation of CO2 into ethanol can be considered as an alternative to the synthesis of ethanol through the hydration of ethylene. High activation energy of carbon dioxide, harsh synthesis conditions as well as high selectivity for hydrocarbons, in particular methane remains the main problems. Further increase of selectivity and efficiency of carbon dioxide hydrogenation processes involves the use of nanocatalysts taking into account the mechanism of CO2 conversion reactions, development of methods for removing excess water as a by-product from the reaction zone and increasing catalyst stability over time.

scholarly journals The crystal structure of a matrine derivative, 13-(methylamine-1-yl) carbodithioate matrine, C17H27N3OS2

2020 ◽  
Vol 235 (3) ◽  
pp. 685-687
Author(s):  
He Hui-Qing ◽  
Dong Fang-Yun ◽  
Zhang Han-Hui ◽  
Ye Jing-Min ◽  
Tan Chun-Can ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Matrine Derivative

AbstractC17H27N3OS2, monoclinic, P21 (no. 4), a = 8.8052(10) Å, b = 10.8860(10) Å, c = 18.6705(2) Å, β = 99.2730(10)°, V = 1766.24(3) Å3, Z = 4, Rgt(F) = 0.0298, wRref(F2) = 0.0802, T = 100.00(10) K.

Flavescenols A and B, two lavandulylated acylphloroglucinols from Sophora flavescens

2021 ◽  
Vol 43 ◽  
pp. 179-183
Author(s):  
Guo-Xian Li ◽  
Xin-Ye Du ◽  
Yan-Qing Xie ◽  
Dan Liu ◽  
Rong-Tao Li ◽  
...  
Keyword(s):  
Sophora Flavescens

A mannose-binding lectin from Sophora flavescens induces apoptosis in HeLa cells

Phytomedicine ◽  
2008 ◽  
Vol 15 (10) ◽  
pp. 867-875 ◽  
Author(s):  
Zhen Liu ◽  
Bo Liu ◽  
Zi-Ting Zhang ◽  
Ting-Ting Zhou ◽  
He-Jiao Bian ◽  
...  
Keyword(s):  
Hela Cells ◽  
Mannose Binding Lectin ◽  
Sophora Flavescens ◽  
Mannose Binding ◽  
Binding Lectin

Hard Materials with Tunable Porosity

MRS Bulletin ◽  
2009 ◽  
Vol 34 (8) ◽  
pp. 561-568 ◽  
Author(s):  
Jonah Erlebacher ◽  
Ram Seshadri
Keyword(s):  
Porous Materials ◽  
Self Assembly ◽  
Porous Metal ◽  
Ceramic Materials ◽  
Equilibrium Temperature ◽  
Length Scale ◽  
Porous Metals ◽  
Hard Materials ◽  
Mesoporous Zeolites ◽  
Pattern Forming

AbstractPorous metals and ceramic materials are of critical importance in catalysis, sensing, and adsorption technologies and exhibit unusual mechanical, magnetic, electrical, and optical properties compared to nonporous bulk materials. Materials with nanoscale porosity often are formed through molecular self-assembly processes that lock in a particular length scale; consider, for instance, the assembly of crystalline mesoporous zeolites with a pore size of 2–50 nm or the evolution of structural domains in block copolymers. Of recent interest has been the identification of general kinetic pattern-forming principles that underlie the formation of mesoporous materials without a locked- in length scale. When materials are kinetically locked out of thermodynamic equilibrium, temperature or chemistry can be used as a “knob” to tune their microstructure and properties. In this issue of the MRS Bulletin, we explore new porous metal and ceramic materials, which we collectively refer to as “hard” materials, formed by pattern-forming instabilities, either in the bulk or at interfaces, and discuss how such nonequilibrium processing can be used to tune porosity and properties. The focus on hard materials here involves thermal, chemical, and electrochemical processing usually not compatible with soft (for example, polymeric) porous materials and generally adds to the rich variety of routes to fabricate porous materials.

Biological effects and mechanisms of matrine and other constituents of Sophora flavescens in colorectal cancer

2021 ◽  
pp. 105778
Author(s):  
Meng-Hua Chen ◽  
Yue-Yu Gu ◽  
Anthony Lin Zhang ◽  
Daniel Man-yuen Sze ◽  
Sui-Lin Mo ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Biological Effects ◽  
Sophora Flavescens
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