PMC:5551755 / 22981-24176 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/5551755","sourcedb":"PMC","sourceid":"5551755","source_url":"https://www.ncbi.nlm.nih.gov/pmc/5551755","text":"4. Conclusions\nThree series of experiments (water effect, method effect and increase in the amount of pillared clay) were studied in order to verify their influence in the final properties (basal spacing and surface area) of pillared clays. In series 1, diluted clay suspensions (minimum 1 g/50 mL) are required to obtain pillared materials with basal spacings and surface areas superior than 17 Å and 200 m2/g, respectively.\nIn series 2, the most outstanding pillaring methodology employed was method 11, in which the pillaring agent was synthesized in 24 h with heating at 60 °C. The resulting Al-PILC presented basal spacing of 17.5 Å and surface area of 237 m2/g.\nIn series 3, fifty grams of pillared clay with high basal spacing and surface area (17.6 Å and 233 m2/g, respectively) were obtained by applying the best pillaring method studied in series 2 (pillaring agent synthesized at 60 °C with subsequent aging over 24 h at ambient temperature) and amount of water in clay suspension (1 g of clay/100 mL of water). The textural properties and basal spacing obtained by this material are comparable to the results obtained with the traditional pillaring method employing just 3 g of clay.","divisions":[{"label":"title","span":{"begin":0,"end":14}},{"label":"p","span":{"begin":15,"end":425}},{"label":"p","span":{"begin":426,"end":667}}],"tracks":[]}