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高比表面钛铌复合氧化物在气相Beckmann重排反应中的催化应用

以K2CO3、Nb2O5和TiO2为原料,经高温固相反应制得KTiNbO5,进一步与HCl溶液反应后得到HTiNbO5。HTiNbO5经用长链有机胺预支撑,再与含Ti(IV)聚合阳离子溶液反应,所得产物在空气气氛中焙烧后制备出高比表面钛铌复合氧化  (本文共6页) 阅读全文>>

《绍兴文理学院学报(自然科学)》2020年01期
绍兴文理学院学报(自然科学)

强酸性阳离子交换树脂催化的Beckmann重排反应

以芳香酮为原料,强酸性阳离子交换树脂为催化剂,经肟化和Beckmann重排反应制备酰胺.经过条件优化选择,得到重排反应的工艺为:以酮肟为原料,加入同等质量...  (本文共5页) 阅读全文>>

《Journal of Beijing Institute of Technology(English Edition)》2003年02期
Journal of Beijing Institute of Technology(English Edition)

Beckmann Rearrangement of Erythromycin A 9(E)-Oxime

Deoxo 6 deoxy 6,9 epoxy 9,9 a didehydro 9 a aza 9 a homoerythromycin A (1), 9 deoxo 11 deoxy 9,11 epoxy 9,9 a didehydro 9 a aza 9 a homoerythromycin A (2) and 9 a aza 9 a homoerythro...  (本文共4页) 阅读全文>>

《Chinese Chemical Letters》1998年09期
Chinese Chemical Letters

One-step Beckmann Rearrangement from Ketones and Hydroxylamine in Dry Media under Microwave Irradiation

Ketones react with hydroxylamine hydrochloride o...  (本文共3;页) 阅读全文>>

《Chinese Chemical Letters》2006年08期
Chinese Chemical Letters

The Effect of Platinum on Stability of the B_2O_3/TiO_2-ZrO_2 Catalyst for Beckmann Rearrangement of Cyclohexanone Oxime

The addition of platinum over the B2O3/TiO2-ZrO2 remarkably enhanced its catalytic stability in the vapor phase Beckmann rearrangement of cyclohexanone oxime under the carrier gas of H2. The content of coke d...  (本文共4页) 阅读全文>>

《Tsinghua Science and Technology》2002年01期
Tsinghua Science and Technology

Gas-Phase Beckmann Rearrangement of Cyclohexanone Oxime over B-ZSM-5 Derived Titanosilicalite

Four different ZSM 5 zeolites are tested for the gas phase Beckmann rearrangement of cyclohexanone oxime (CHO) into lactam. B ZSM 5 derived titanosilicalite (Ti ZSM 5) exhibits catalytic performances comparable to hydrothermally synthesized titanosilicalite (TS 1), much better than B ZSM 5 and Al ZSM 5. The effect of reaction conditions (solvent, fee...  (本文共5页) 阅读全文>>