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Nakajima 2 and M.Yoshimura3 1 Research Unit of Advanced Ceramics,Department of Materials Science, Faculty of science, Chulalongkorn University, Bangkok, Thailand 2 Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Japan 3 Materials and Structures Laboratory , Tokyo Institute of Technology, Japan a pornapa.s@chula.ac.th Keywords: hydrothermal, hybrid photocatalyst, TiO2/SiO2, rice husk ash Abstract.
Photochem.Photobiol.A : Chemistry, 148 (2002), p 183-189 [5] A.H.
Iier, in : The Chemistry of Silica, Solubility, Polymerization, Colloid and Surface Properties, and Biochemistry.

Preparative Solid Phase Extraction for the Purification of Levoglucosan Obtained from Lignocellulose Kristine Meilea * and Aivars Zhurinshb Latvian State Institute of Wood Chemistry, Dzerbenes 27, Riga, LV-1006, Latvia a kristine.meile@inbox.lv, b aivarsz@edi.lv Keywords: Levoglucosan, Ion exchange resin, Preparative solid phase extraction.
The pyrolysis liquids were obtained at the Latvian State Institute of Wood Chemistry from pre-treated birch wood chips according to literature [14].
ChemSpider data base was used to search for chemical structures.

Results and Discussion 3.1 Structure and Properties of C/N-T.
Su, Monitoring of total volatile organic compound emissions from plastic runway surfaces, Toxicological and Environmental Chemistry 101 (2019) 215-227
Su, Characterization of interfacial behaviour of ortho-positioned diaryl disulfide on silver substrates by surface-enhanced Raman scattering and electroreduction, Materials Chemistry and Physics 235 (2019) 121726.

Widhi Mahatmanti1,2,a*, Nuryono2,b, Narsito2,c 1 Department of Chemistry, Faculty of Mathematics and Natural Sciences, Semarang State University, Indonesia 50229 2Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Sekip Utara, Yogyakarta, Indonesia 55281 awidhimahatmanti@rocketmail.com, bnuryono_mipa@ugm.ac.id, cnarsito@yahoo.com Keywords: chitosan, membrane, adsorption Cu(II) Abstract.
It can be observed that the surface of membrane chitosan is smooth, the texture is plain without pores, gives a dense structure and very small porosity.

When the F exist, the sodium fluoride which is slightly soluble in water is formed with containing Si substances such as cement, masonry materials ,resulting in the flue, chimney structure continuous dissolution, while the pressure in the flue and the chimney is positive ,Acid clay used in closed performance is poor, and construction quality control is lax.
Hydrometallurgical process physical chemistry [M].
Cansolv renewable amine desulfurization technology Applied Materials Physics and Chemistry PhD thesis in 2000 [7] Gong Min.

From [3] it is known that sodium ions in solutions of sodium hydrosilicates are stabilizers of structure, preventing the destruction of sodium hydrosilicates through silicic acid formation.
Cherkinsky, Chemistry of the Inorganic Polymeric Binders, Chemistry, Leningrad, 1967 (in Russian)

Molecular structures of silyl-‌anchor azobenzene dyes (1 and 2) used in this work as sensitizing dyes. 1 2 Experimental Section Silyl-anchor azobenzene dye containing a CF3 group (1) was synthesized by lithiation of 4-iodoazobenzene with t-BuLi in ether, followed by substitution with triethoxy[4-(trifluoromethyl)phenyl]silane.
Vol. 3 (2008), p. 303; (e) Organosilicon Chemistry I-VI: From Molecules to Materials, edited by N.
Weis, Wiley-VCH, Weinheim (1993-2005); (f) The Chemistry of Organic Silicon Compounds Volume 1-3, edited by S.

In analytical chemistry, the pH indicator is very important, especially when performing an acid-base titration technique.
Other than that, the reaction of starch and C. ternatea extracts generated a high-intensity peak at 1060 cm-1 of the film, indicating the presence of C-O stretching in the structure of the polysaccharides for all samples.
Oliveira, f. chemistry, Impact of Lignosulfonates on the Thermodynamic and Kinetic Parameters of Malvidin-3-O-glucoside in Aqueous Solutions, 66(25) (2018) 6382-6387.

Wang, Surface modifications of bone implants through wet chemistry, J.
Johansson, Protein adsorption to surface chemistry and crystal structure modification of titanium surfaces, J.

This structure can protect the silicon nitride membranes and improve their stabilities.
White, Analytical chemistry 83 (10), 3840 (2011) [7] A.
Staufer, Analytical chemistry 80 (12), 4651 (2008) [8] M.