Synthesis and characterization of activated carbo-aluminosilicate material from oil shale

• Published in: Microporous and mesoporous materials Vol. 75; no. 1; pp. 107 - 114
• Main Author: Shawabkeh, Reyad Awwad
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 01.01.2004; Elsevier
• Subjects: Activated carbo-aluminosilicate; Adsorbents; Adsorption; Characterization; Chemistry; Exact sciences and technology; General and physical chemistry; Oil shale; Surface physical chemistry; Synthesis; Characterization; Synthesis; Adsorption; Oil shale; Activated carbo-aluminosilicate; Liquid solid adsorption; Aluminosilicates; NMR spectrometry; Zeolite; X ray diffraction; Supported catalyst; Molecular sieve; Inorganic compound; Infrared spectrometry; Heterogeneous catalysis; Activated carbon; Waste water purification; Application; Organic compounds
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2004.07.020

Three novel activated carbo-aluminosilicate materials were prepared from oil shale by chemical activation. The chemical used in the activation process were 95 wt% sulfuric acid and 5 wt% nitric acids to produce activated carbon (AC) supported on silica–alumina structure (ACASA), followed by treatment with either sodium hydroxide to produce AC within Na-type zeolite (ACASS) or by potassium hydroxides to obtain AC within K-type zeolite (ACASP). The specific surface areas of the three materials obtained using Sears’ method were 314 m 2/g for ACASA, 189 m 2/g for ACASS and 292 m 2/g for ACASP. X-ray diffraction analyses of these samples show the formation of zeolite Y, Na-X, and A-types, sodalite, sodium silicate, mullite and cancrinite. FT-IR spectrums show the presence of carboxylic, phenolic and lactonic groups on the surface of these samples. The total functional groups of these samples were measured using Boehm’s method as: 5.02 mmol/g For ACASA, 2.91 mmol/g for ACASS and 4.08 mmol/g for ACASP. The corresponding cation exchange capacities were 146.9, 78 and 113.8 meq/100-g, respectively. Methylene blue adsorption by these adsorbent obtained at pH 7 show a multilayer of adsorption with saturation values of 117.9, 212.5 and 325.2 mg/g.