Control of Ti active-site microenvironment in titanosilicate catalysts and its effect on oxidation pathways
Control of Ti active-site microenvironment in titanosilicate catalysts and its effect on oxidation pathways
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钛硅酸盐催化剂Ti活性位微环境的控制及其对氧化途径的影响
DOI：
10.1016/j.apcata.2020.117953
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发表时间：
2021-01-25
影响因子：
5.5
通讯作者：
He, Mingyuan
中科院分区：
文献类型：
--
作者：
Yu, Yunkai;Wang, Rui;He, Mingyuan
钛硅酸盐中钛（Ti）活性位点微环境对氧化性能至关重要，因为它可以影响H2O2活化的氧化途径、Ti- ooh的稳定性以及活性“O”向反应物的转移能力。本文通过酸或碱处理可控地设计了mww型钛硅酸盐中的4种Ti活性位点，并探讨了它们对氧化途径的影响。通过一系列表征，确定了这些微环境，它们具有不同的氧化活性，顺序如下：Ti(OSi)(4)(OTiO5)(2)
The titanium (Ti) active-site microenvironment in titanosilicates is critical for oxidation performance, since it could influence oxidation pathways of the activation of H2O2, the stability of Ti-OOH species and the transfer ability of active "O" to reactant. Here, four kinds of Ti active sites in MWW-type titanosilicates were designed controllably by acid or alkali treatments, and their influences on oxidation pathways were explored. Through a series of characterizations, these microenvironments were identified, and they present different oxidation activities in this order: Ti(OSi)(4)(OTiO5)(2)