caa a22 4500 465743188 CHVBK 20180323111813.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02697346 doi (NATIONALLICENCE)springer-10.1007/BF02697346 Preparation of aluminum hydroxide gels by the sol-gel method [Elektronische Daten] [Ki-Chang Song, In-Jae Chung] Aluminum hydroxide gels were prepared by ihe sol-gel method. The role of acid in sols was investigated through the analysis of telling lime and hydrolysis rale. The phase transformation of gels with calcination temperatures was also monitored with X-Ray diffraction. The gelling times of the aluminum hydroxide sols decreased with the increase of acid content. Exceptionally, the solution peplized with 0.07 HCI/alkoxide molar ratio look longer time than other solutions until the gellation. The hydrolysis rate of aluminum hydroxide was much faster as the acid concentration increased during peptization. In the case of NH4OH as a peptizing agent, there was Ihe lower rate of hydrolysis and thus the more alkoxyl groups were remained in the gel. Korean Institute of Chemical Engineering, 1990 Song Ki-Chang Eng. & Research Institute, Doosan Glass Co., Gunpo-city, Gyunggi-do, Korea aut Chung In-Jae Eng. & Research Institute, Doosan Glass Co., Gunpo-city, Gyunggi-do, Korea aut Korean Journal of Chemical Engineering Springer-Verlag 7/1(1990-01-01), 81-84 0256-1115 7:1<81 1990 7 11814 https://doi.org/10.1007/BF02697346 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02697346 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Ki-Chang Eng. & Research Institute, Doosan Glass Co., Gunpo-city, Gyunggi-do, Korea aut NATIONALLICENCE 700 1- Chung In-Jae Eng. & Research Institute, Doosan Glass Co., Gunpo-city, Gyunggi-do, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer-Verlag 7/1(1990-01-01), 81-84 0256-1115 7:1<81 1990 7 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer