Reaction of Hydrogrossular with Hydrogen Chloride Gas at High Temperature

• Published in: Chemistry of materials Vol. 13; no. 8; pp. 2523 - 2527
• Main Authors: Fujita, Satoru, Suzuki, Kenzi, Ohkawa, Makio, Shibasaki, Yasuo, Mori, Toshiaki
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 20-08-2001
• Subjects: Air pollution caused by fuel industries; Applied sciences; Atmospheric pollution; Chemistry; Combustion and energy production; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Inorganic chemistry and origins of life; Kinetics and mechanism of reactions; Pollution; Pollution reduction; Prevention and purification methods; Stack gas and industrial effluent processing; Chemisorption; Hydrogen Chlorides; Gas solid reaction; Reaction product; Fixed bed reactor; Inorganic adsorbent; Experimental study; Lattice parameters; Garnet; Gas solid adsorption; Aluminium Hydroxosilicates; Calcium Hydroxosilicates; Physicochemical purification; Kinetics; Flue gas purification; Breakthrough curve; Crystalline structure
• ISSN: 0897-4756; 1520-5002
• DOI: 10.1021/cm000863r

The reaction between hydrogrossular and hydrogen chloride (HCl) gas was performed in a fixed bed reactor above 400 °C. The hydrogrossular was efficiently reacted with HCl gas in the temperature range of 400 to 950 °C and transformed into Ca12Al9.9Si4.05O32Cl5.9 (calcium aluminum chlorosilicate). The crystal structure of the product phase Ca12Al9.9Si4.05O32Cl5.9 was cubic, space group I 3d, with unit cell a = 12.0173(1) Å, and was similar to that of wadalite. The structure consists of a framework of (Al,Si)O4 tetrahedra. A large cavity in the framework accommodates Ca−Cl−Ca linearly coordinated atoms.