CaltechAUTHORS
  A Caltech Library Service

Structure and Reduction and Mixed Copper-Aluminum Oxide

Patrick, Valerle and Gavalas, George (1990) Structure and Reduction and Mixed Copper-Aluminum Oxide. Journal of the American Ceramic Society, 73 (2). pp. 358-369. ISSN 0002-7820. https://resolver.caltech.edu/CaltechAUTHORS:20151104-143220828

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20151104-143220828

Abstract

Mixed oxides of copper and aluminum were prepared in porous form by the citrate process under various calcination conditions. The oxide samples were characterized by several techniques to determine chemical structure and texture. Atomic absorption spectroscopy provided the fractions of copper soluble and insoluble in hot nitric acid, which closely corresponded to CuO and CuAl_2O_4, respectively. X-ray diffraction (XRD) provided complementary information about the content of the pure and compound oxides. X-ray line broadening, scanning electron microscopy, and transmission electron microscopy were used to estimate the size of crystallites or phase domains. The reduction by hydrogen of samples containing different amounts of CuO and CuAl_2O_4 was studied by thermogravimetric analysis and XRD. The compound oxide CuAl_2O_4 and part of CuO closely associated with Al_2O_3 were reduced much more slowly than bulk CuO. Oxides of 1+ oxidation state, Cu_2O and CuAlO_2, were identified as reduction intermediates.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1111/j.1151-2916.1990.tb06519.xDOIArticle
http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1151-2916.1990.tb06519.x/abstractPublisherArticle
ORCID:
AuthorORCID
Gavalas, George0000-0003-1468-6835
Additional Information:© 1990 Wiley. Received June 1, 1988; approved May 6, 1989. Manuscript No. 199074. Supported in part by General Electric Co. K. E. Spear contributing editor.
Funders:
Funding AgencyGrant Number
General ElectricUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20151104-143220828
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151104-143220828
Official Citation:Patrick, V. and Gavalas, G. (1990), Structure and Reduction and Mixed Copper-Aluminum Oxide. Journal of the American Ceramic Society, 73: 358–369. doi: 10.1111/j.1151-2916.1990.tb06519.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61850
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:05 Nov 2015 02:50
Last Modified:03 Oct 2019 09:12

Repository Staff Only: item control page