caa a22 4500 477091792 CHVBK 20180405111517.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF00489810 doi (NATIONALLICENCE)springer-10.1007/BF00489810 Characterization of synthetic hydrocalumite-type [Ca2Al(OH)6]NO3· m H2O: Effect of the calcination temperature [Elektronische Daten] [Esteban López-Salinas, M. Serrano, M. Jácome, Isaac Secora] A lamellar hydrocalumite-type [Ca2Al(OH)6]NO3·mH2O, (HC), was synthesized and characterized by X-ray diffraction analysis (XRD), surface area, pore size measurements, CO2-Thermal Programmed Desorption, and later tested as catalysts in the double bond isomerization of 1-butene. The layered structure of HC collapses above 523 K yielding an amorphous material at 573 K which upon calcination at 873-973 K transforms into a mixture of CaO and mayenite Ca12Al14O33. The calcination temperature has a marked effect in the formation of basic sites. Thus for example, HC calcined at 1073 K shows 90% of strong basic sites (CO2 desorption at 1023 K) while they are absent in HC calcined at 573-673 K. HC calcined at 973 K shows high catalytic activity (74% conversion) in the isomerization of 1-butene without any appreciable deactivation after 4 h on stream. Kluwer Academic Publishers, 1996 hydrocalumite nationallicence mayenite nationallicence solid base-catalyst nationallicence 1-butene isomerization nationallicence López-Salinas Esteban Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut Serrano M. Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut Jácome M. Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut Secora Isaac Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut Journal of Porous Materials Springer Netherlands 2/4(1996-12-01), 291-297 1380-2224 2:4<291 1996 2 10934 https://doi.org/10.1007/BF00489810 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00489810 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- López-Salinas Esteban Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut NATIONALLICENCE 700 1- Serrano M. Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut NATIONALLICENCE 700 1- Jácome M. Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut NATIONALLICENCE 700 1- Secora Isaac Instituto Mexicano del Petróleo, Gerencia de Ciencias Básicas e Investigación Prospectiva, Eje Central Lázaro Cárdenas 152, 07730, México D.F., CP, Mexico aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer Netherlands 2/4(1996-12-01), 291-297 1380-2224 2:4<291 1996 2 10934 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer