VOCs adsorption over zeolite beta-templated carbon

초록

Volatile organic compounds (VOCs) such as formaldehyde, BTXs (benzene, toluene, and xylenes), ketones, and alcohols are among the most harmful organic species to the general public in indoor/outdoor environment, some of which are also known to be carcinogenic. VOCs can also cause environmental and health risks by forming photochemistry smog, and mainly emitted from the chemical process industries, textile fabrics, building/construction materials, and indoor furniture paints. Given the high surface area with microporous nature, ordered microporous carbon can be considered as a fascinating carbon materials for removal of VOCs. Herein, the zeolite beta-templated carbon(ZTC) was prepared and applied to investigate the adsorption behavior of acetone and toluene. The prepared adsorbent was characterized by N2 adsorption isotherm, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron spectroscopy techniques. To be specific, the adsorption capacities for acetone and toluene over ZTC were measured by their adsorption isotherms at different temperature conditions. In addition, the isosteric heats of adsorption were obtained by applying the Clausius-Clapeyron equation in the temperature range of 293-303K.