Synthesis and chemistry of chromium in CrAPO-5 molecular sieves
β Scribed by Bert M. Weckhuysen; Robert A Schoonheydt
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 576 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0144-2449
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π SIMILAR VOLUMES
Chromium has been substituted successfully in a silicalite structure for the first time in acidic medium. A combined application of cyclic voltammetry (Et/2 = + 588 mV vs. standard calomel electrode) and electron spin resonance reveals that both Cr ~Γ· and Cr 5Γ· are present as part of the structure w
A chromium-substituted silicoaluminophosphate molecular sieve (CrAPSO-11) and a Cr-supported SAP041 molecular sieve (Cr/SAPO-11) were studied by XPS and rednctiowxidation (redox) cycles. The distribution of oxidation states as well as the average oxidation state for chromium were determined for both
Organic-functionalized molecular sieves silicoaluminophosphates with AFI and AEL topologies have been first hydrothermally synthesized by using 1,4-bis(triethoxysilyl) benzene (BTEB) as unique silicon source. Various techniques have been performed to characterize the structures of the two molecular