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INVESTIGATION OF THE STRUCTURAL STABILITY OF COBALT-CONTAINING ALPO-44 MICROPOROUS MATERIALS

BARRETT, PA; SANKAR, G; CATLOW, CRA; THOMAS, JM; (1995) INVESTIGATION OF THE STRUCTURAL STABILITY OF COBALT-CONTAINING ALPO-44 MICROPOROUS MATERIALS. J PHYS CHEM SOLIDS , 56 (10) 1395 - 1405.

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Abstract

Using the recently developed combined XRD/EXAFS technique to investigate the structural changes which occur during the calcination of Co-substituted microporous aluminophosphates, we have found significant differences between the structural stability of CoAPO-44 and the Si-substituted variant of this material which is stable at the catalytic activation temperatures. The long-range and short-range order of the templated, open-structure cobalt phosphate, known as DAF-2, was also studied. Our analysis is assisted by the availability of precise information on the variation of the thermal parameters with temperature for tetrahedrally coordinated Co.

Type:Article
Title:INVESTIGATION OF THE STRUCTURAL STABILITY OF COBALT-CONTAINING ALPO-44 MICROPOROUS MATERIALS
Keywords:MICROPOROUS MATERIALS, XAFS (EXAFS AND XANES), X-RAY DIFFRACTION, X-RAY ABSORPTION, MOLECULAR-SIEVES, IN-SITU, METHANOL, XRD, CATALYSTS, CO
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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