Preparation of nanostructured activated alumina and hybrid alumina–silica by chemical precipitation for natural gas dehydration

摘要: Abstract In this study activated alumina nanostructure was prepared by precipitation method using aluminum chloride sol, nitrate and isobutanolate as a precursor at ambient temperature in the pH range of 10–11. The calcination dried 700 °C for 3 h produced gamma with (⩽10 nm). nitrogen isothermal adsorption applied to measure BET specific surface area, total pore volume diameter. Microstructure morphological analyses were carried out X-ray diffraction (XRD), scanning electron microscopy (SEM) transmission (TEM). Humidity sorption capacity adsorbents measured aqueous saturated salt solutions. Maximum 10% 60% relative humidity obtained 7.7% 18.1%, respectively.