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Online since: January 2013
Authors: Chao Ran Dou, Hao Wu, Zhu Gong, Guo Ping Yu, Yan Song
Comparing the black soybean extract by petroleum ether defatted against the other black soybean extract by defatted expressed significantly different (p>0.05).The destruction or transformation of phenolic chemical structures during defatted process treatment may also be responsible for the reduced levels of phenolic compounds. 3.2 Effect of anthocyanins extracts of black soybean to DPPH radical-scavenging Fig.2.
Food Chemistry, 112, 659–663 [2] Hyo Geun Kim, Gi Won Kim,(2011) Influence of roasting on the antioxidant activity of small black soybean (Glycinemax L.
Food Chemistry, 121, 140–147 [5] Toong Long Jeng, Yi Ju Shih,(2010) Comparisons of flavonoids and anti-oxidative activities in seed coat, embryonic axis and cotyledon of black soybeans.
Food Chemistry, 123, 1112-1116 [6] Seda Ersus,Unal Yurdagel,(2007)Microencapsulation of anthocyanin pigments of black carrot by spray drier.
Food Chemistry, 132, 1908–1914
Online since: September 2021
Authors: Olena Svietkina, Edgar Caseres Cabana, Olga Netiaga, Hanna Tarasova, Ievgenii Ustymenko
For this, the porous structure of carbonaceous materials was determined.
Procedia Chemistry, 10, 145-150. https://doi.org/10.1016/j.proche.2014.10.025 [2] Gorova, A., Pavlychenko, A., & Borysovs’Ka, O. (2013).
Structure of carbon sorbents produced from coal.
Coke and Chemistry, 61(12), 463-468. https://doi.org/10.3103/S1068364X18120062 [10] Falshtynskyi, V.S., Dychkovskyi, R.O., Lozynskyi, V.G., & Saik, P.B. (2013).
ACS Sustainable Chemistry & Engineering, 3(9), 2092-2099. https://doi.org/10.1021/acssuschemeng.5b00355 [17] Maddalone, R.F. (1996).
Online since: January 2014
Authors: Yu Feng Li
China 2New Materials and Function Coordination Chemistry Lab, Qingdao University of Science & Technology, Qingdao, 266042, P.
Results and discussions The title complex crystal structure is shown in Fig.1.
The crystal data and structure refinement is shown in Table 1.
Fig. 1 The crystal structure of title complex Fig.2 π-π interactions of the title complex Table 1.
Crystal data and structure refinement for the title complex.
Online since: January 2009
Authors: Kun He Fang, Dong Mei Liu, Hua Shan Yang
With double excitation of cement hydration product hydroxide and gypsum, the low alkalinity C-S-H was produced. 1 Foreword As everyone knows, active mineral additives admixed in cement and concrete have important strength effect mainly coming from their chemistry and physical function.
The pozzolana reaction can play chemistry fill the role to cement hydration matrix, and mineral additives also have micro-aggregate effect.
Needle-like ettringite crystal already grew to bulky columnar crystal, intertwined closely with C-S-H gel and hydroxide, the compact plating structure was produced.
Advn Cem Bas Mat,1995,2:43~52 [3] В.В.Илюхин,etc.Гидросилика Тыкалция - Синтез - Монокри ста ллови Крисга ллохимня,(hydrated calcium silicate-crystal composition and crystal chemistry)[M].Наука,1979
Online since: March 2015
Authors: Bo Wen Cheng, Hong Jun Zang, Jia Xuan Feng, Qing Yan, Ming Gaung Li
Conversion of chitosan into 5-hydroxymethylfurfural via Hydrothermal synthesis Jiaxuan Fenga, Hongjun Zangb *,Qing Yanc, Mingguang Lid, Bowen Chenge State Key Laboratory of Hollow Fiber Membrane Material and Processes, Department of Environmental and Chemistry Engineering, Tianjin Polytechnic University, Tianjin 300387, China afengjiaxuan501@163.com,bchemhong@126.com,c929482239@qq.com,d1274501228@qq.com, ebowen@tjpu.edu.cn Keywords: chitosan dehydration, 5-HMF, Lewis acid, ionic liquid, hydrothermal synthesis Abstract:5-hydroxymethylfurfural (5-HMF) was produced from chitosan by a simple one-pot reaction including hydrolysis and dehydration in the presence of various ionic liquids and Lewis acids.
Entry catalyst structure HMF Yield [mol%] 1 [BMIM]HSO4 12 2 [BMIM]Cl 0.4 3 [BMIM]Br 0.3 4 [(HSO3-B)2MIM]HSO4 3.7 5 [(CH2)4SO3Hmim]HSO4 8 Experiment conditions: chitosan, 100 mg; distilled water, 20 mL; treatment time, 5 h; ionic liquid,0.4081g(2wt% to water; temperature, 180 °C.
Therefore, in terms of green and sustainable chemistry, it is necessary to separate the product and reuse ionic liquids in practice.
Although HMF yield was not very satisfactory, this work is a proof-of-principle that chitosan can be degraded using green chemistry principles to give useful chemical building blocks.
Online since: January 2010
Authors: Jakrapong Kaewkhao, Pichet Limsuwan, N. Srisittipokakun, C. Kedkaew
The manganese, 55Mn, ions have been frequently used as paramagnetic probes for exploring the structure and properties of vitreous systems which their ions have strong bearing on the optical and magnetic properties of glasses [1,2].
Veeraiah: Journal of Physics and Chemistry, Vol. 67 (2006), pp.789-795
Rao: Journal of Physics and Chemistry of Solids, Vol. 59(1) (1998), pp.121-128
Paul, Chemistry of Glasses, second ed., Elsevier, New York, 1990
Online since: July 2011
Authors: Shi Qiang Cui, Hui Li, Shou Zhi Pu
Photochromism of a New Unsymmetrical Diarylethene Bearing both Thiazole and a Methoxyl Group Hui Li1, Shouzhi Pu1,a, Shiqiang Cui1 1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structures of 1 were confirmed by elemental analysis, NMR and IR.
Fang: Journal of Physical Chemistry C, Vol. 112 (2008), p. 5190
Aubard: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 189 (2007), p. 167.
Online since: October 2011
Authors: Hai Feng Chen, Feng Cao, Pei Song Tang, Min Hong Xu, Guo Xiang Pan
Characterization and Visible-Light Photocatalytic Activity of Nano-Bi2MoO6 catalysts Prepared by Hydrothermal Process Peisong Tanga, Haifeng Chenb, Feng Caoc, Guoxiang Pand and minhong Xue Department of Chemistry, Huzhou Teachers College, Huzhou 313000, P.R.
The search for suitable semiconductors as photocatalysts for the complete decomposition of organic contaminants, hydrogen production via water splitting and conversion of CO2 to hydrocarbon fuel is one of the noble missions of materials science, chemistry and physics [2-5].
As one of the wetting chemistry approach, hydrothermal synthesis has been widely used to prepare nanocrystalline materials, and takes great advantages over the aforementioned approaches [12-13], for example, hydrothermal method facilitates the tailoring of morphology, size and the controlling of crystal structure, etc.
Online since: October 2014
Authors: Yeshvir Singh Panwar, Mahendra Aynyas, M.K. Tejraj, S.P. Sanyal
PG College, Sehore, 466001, India 2Department of Chemistry, CSA Govt.
It is found that TmN is stable in NaCl – type structure under ambient pressure.
We predict a structural phase transition from NaCl-type (B1-phase) structure to CsCl-type (B2-phase) structure of this compound at a high pressure of 68 GPa.
For a given pressure, a stable structure is one for which enthalpy has lowest value and the transition pressure (Pt) is determined at which the enthalpies of two structures are the same.
Skriver, Electronic Structure of the Actinide Metals,J.
Online since: January 2013
Authors: Shu Hui Zhao, Hui Min Lin, Hai Qin Rong
Experimental Material and agent PAN copolymers slurry (acrylonitrile: methylacrylate: itaconic acid = 96:3:1), with a viscosity-average molecular weight Mη=12.5×104 g.mol-1 were provided by institute of coal chemistry, the Chinese Academy of Sciences.
Polymethyl Methacrylate(PMMA)was purchased from Aladdin Chemistry Co., Ltd.
PVA–based activated carbon fibers with lotus root-like axially porous structure.
Structure evolution and optimization in the fabrication of PVA-based activated carbon fibers.
The structure and rheology of comples fluids[M].