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Microporous AM-11 crystalline niobium silicates were studied as solid acid catalysts for the dehydration of xylose in a water-toluene solvent mixture at 140–180 °C. After 6 h at 160 °C, xylose conversions of up to 90% and furfural yields of up to 50% were achieved, and the catalysts could be reused without loss of activity or selectivity. The calcined AM-11 catalysts gave higher furfural yields than...
The t‐butanol dehydration over basic ETS‐10, ETAS‐10 and AM‐6 has been investigated. All these as‐synthesised materials catalyse this reaction in a very similar fashion yielding remarkably high selectivities for isobutene, which are independent of both reaction conditions and conversion levels. The catalyst decay was more profound at lower reaction temperatures (ca. 200°C), whereas no decay was observed...
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