Adsorption of carbon dioxide onto hydrotalcite-like compounds (HTlcs) at high temperatures

• Type: Article in International Scientific Journal
• Date: 2001

Authors

Yong, Z (Author) Other; Mata, V (Author) Other; Alírio Rodrigues (Author) FEUP

Journal

Title: Industrial & Engineering Chemistry Research

Vol. 40

Pages: 204-209

ISSN: 0888-5885

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 132 Citations

Scopus - 163 Citations

Other information

Authenticus ID: P-000-WNG

DOI: 10.1021/ie000238w

Abstract (EN): The adsorption capacities of carbon dioxide on six commercial hydrotalcite-like compounds and the main factors (aluminum content, anion type, water content, and heat treatment temperature) influencing their adsorption capacity at high temperatures have been investigated using a gravimetric technique. There is an optimum aluminum content and heat treatment temperature for the adsorption capacity. The carbonate anion favors adsorption of carbon dioxide compared to OH-, and a low content of water also improves the adsorption capacity. The carbon dioxide adsorption capacity is mainly dependent on the microporous volume, interlayer spacing, and layer charge density of the hydrotalcite-like compounds.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6