A new heterogeneous olefin metathesis catalyst composed of rhenium oxide and mesoporous alumina
A new heterogeneous olefin metathesis catalyst composed of rhenium oxide and mesoporous alumina
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DOI：
10.1016/j.micromeso.2004.04.026
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发表时间：
2004-09
影响因子：
5.2
通讯作者：
T. Oikawa;T. Ookoshi;Tsunehiro Tanaka;Takashi Yamamoto;M. Onaka
中科院分区：
文献类型：
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作者：
T. Oikawa;T. Ookoshi;Tsunehiro Tanaka;Takashi Yamamoto;M. Onaka
研究发现，精细分散在介孔氧化铝上的氧化铼，其孔径均匀，直径为 3 nm，比表面积为 560 m2/g，对于端烯烃和内烯烃的液相复分解反应来说，比在具有随机孔结构的普通 γ-氧化铝上的氧化铼具有更高的活性和选择性。与普通 γ-氧化铝上的 7 wt% Re2O7 相比，介孔氧化铝上的 7 wt% Re2O7 在低温下更顺利且更有选择性地将 1-辛烯和 7-十六碳烯转化为复分解产物的平衡组成。讨论了介孔氧化铝负载Re2O7的催化作用。
Rhenium oxide finely dispersed on mesoporous alumina with uniform pore size of 3 nm in diameter and large specific surface area of 560 m2/g was found to be a more active and selective catalyst for liquid-phase metathesis reactions of not only terminal but also inner olefins than rhenium oxide on normal γ-alumina with random pore structure. 7 wt% Re2O7on mesoporous alumina transforms 1-octene and 7-hexadecene into their equilibrium composition of metathesis products at low temperatures more smoothly and selectively than 7 wt% Re2O7on normal γ-alumina. The catalysis of Re2O7loaded on mesoporous alumina was discussed.