Read e-book online Advanced Materials and Engineering PDF

By Taufiq Yap Yun Hin

ISBN-10: 3038351571

ISBN-13: 9783038351573

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B. Zhang, et. al. Protophilic amide ionic liquid assisted esterification and catalysis mechanism, J. Mol. Catal. A: Chem. 307 (2009) 9-12. R. Kirumakki, N. Nagaraju, S. Narayanan, A comparative esterification of benzyl alcohol with acetic acid over zeolites Hβ, HY and HZSM5, Appl. Catal. A 273 (2004) 1-9. Z. Y. H. al. Selective alkylation of phenol with tert-butyl alcohol catalyzed by Brönsted acidic imidazolium salts, J. Mol. Catal. A: Chem. 225 (2005) 27-31. Advanced Materials Research Vol. com Keywords: SiO2-coated α-Al2O3; pearlescent pigment; liquid phase deposition Abstract: The SiO2-coated α-Al2O3 pearlescent pigment was prepared by liquid phase deposition (LPD).

01mol, –CH2Cl), prepared according to the previous report [14], in acetonitrile (15mL) was added to the formed imidazole sodium salt solution, the reaction was carried out at 65 ℃ for 48 h. The PS-CH2-imidazole product was filtered off and washed by soxhlet extraction using ethanol as solvent and dried under vacuum. Second, PS-CH2-imidazole and equiv (relative to -imidazole) 1,3-propane sultone were Advanced Materials Research Vol. 983 21 added in anhydrous toluene and reacted at 75 ℃ for 14h. Then product named as the PS-[SO3H-PMIM] was filtered off, washed with toluene and dried under vacuum.

Swelling of montmorillonite particles is generally attributed to the volume of water molecules that are bound to the clay surface, size and valence of cation and pH values of permeate liquids [2, 3]. Swelling of bentonite decreases with increasing valence Thus, it was reported that increasing hydrated cation size for mono-valent cation(; +1 ion) gives swelling to bentonite structure and no difference results for bi-valent cation(; +2 ions) regardless of hydrated cation size. The cases of pH<3 and pH>12 showed a greater influence on swelling of bentonite, whereas pH value in between them reported a constant swell volume [3-5].

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Advanced Materials and Engineering by Taufiq Yap Yun Hin

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