Acid-treated vermiculites as effective catalysts of high-temperature N2O decomposition

作者：Chmielarz Lucjan^*; Rutkowska Malgorzata; Jablonska Magdalena; Wegrzyn Agnieszka; Kowalczyk Andrzej; Boron Pawel; Piwowarska Zofia; Matusiewicz Adam

来源：Applied Clay Science, 2014, 101: 237-245.

DOI：10.1016/j.clay.2014.08.006

• Nitrous oxide
• Catalytic decomposition
• Vermiculite
• Acid-treatment

Vermiculites treated with solutions of HNO3, HCl and H2SO4 were tested in the role of catalysts for high-temperature decomposition of N2O to N-2 and O-2. Acid treatment of clay mineral resulted in a partial leaching of components of its octahedral sheets, which were partially deposited on the surface of vermiculite. Such modification of the clay samples significantly increased their specific surface area and porosity as well as influenced their surface acidity. Acid treatment of vermiculites activated them in the process of high-temperature N2O decomposition, however activation effect depended on type of acid used as well as duration of acid modification.

• 出版日期2014-11