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CN106984343A 一种用于N‑β‑羟乙基乙二胺合成哌嗪与N‑甲基哌嗪的催化剂及其制备方法 有权

一种用于N‑β‑羟乙基乙二胺合成哌嗪与N‑甲基哌嗪的催化剂及其制备方法
Abstract:
本发明公开了一种用于N‑β‑羟乙基乙二胺合成哌嗪与N‑甲基哌嗪的催化剂及其制备方法，所述催化剂的载体为碱活化膨润土，活性物质的组成为XaYbZcOd；其中X为Ni、Cu、Fe、Cr和Zn元素中的一种，Y为P、S、B元素的一种，Z为稀土元素中的一种，O为氧元素；a＝1，b＝0.2～2，c＝0.3～2，d值取决于a、b、c；本发明催化剂用于N‑β‑羟乙基乙二胺合成哌嗪与N‑甲基哌嗪，显著提高了N‑β‑羟乙基乙二胺的转化率和成哌嗪与N‑甲基哌嗪的总选择性，本发明催化剂载体价格便宜，催化剂制备简便，催化合成产物收率高，哌嗪与N‑甲基哌嗪的选择性可灵活调节以适应市场需求。
Abstract(English):

The invention discloses a catalyst for synthesizing piperazine and N-methyl piperazine from N-beta-hydroxyethyl ethylenediamine and a method for preparing the catalyst. A carrier for the catalyst is alkali-activated bentonite, and active substances of the catalyst comprise XYZO; the X represents one of Ni, Cu, Fe, Cr and Zn elements, the Y represents one of P, S and B elements, the Z represents one of rare earth elements, and the O represents oxygen elements; the a is equal to 1, the b ranges from 0.2-2, the c ranges from 0.3-2, and a value of the d depends on the a, the b and the c. The catalyst and the method have the advantages that the catalyst can be used for synthesizing the piperazine and the N-methyl piperazine from the N-beta-hydroxyethyl ethylenediamine, accordingly the conversion ratio of the N-beta-hydroxyethyl ethylenediamine can be obviously increased, and the piperazine and N-methyl piperazine synthesis overall selectivity can be obviously improved; the carrier for the catalyst is low in cost, the catalyst is easy and convenient to prepare, catalytic synthesis products are high in yield, the piperazine and N-methyl piperazine selectivity can be flexibly adjusted, and accordingly market requirements can be met.

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