Highly thermally stable anti-opalite TiOx/ZnO-carbon for achieving targeted transfer of NH3 oxidation products in multiphase catalysis

影响因子：13.4

DOI码：10.1016/j.cej.2025.168092

发表刊物：Chemical Engineering Journal

关键字：Anti-opalite structureAmmonium perchlorateSolid propellentHigh-thermal stabilityAdsorption-conversion mechanism

摘要：The development of catalysts that combine high thermal stability with the ability to achieve targeted modulation of catalytic products is a key challenge in multiphase thermal catalysis. In this paper, an anti-opalite-type TiOx/ZnO‑carbon (TiOx/ZnO-AC) with high thermal stability is designed, periodic pores (pore size ~200 nm, wall thickness ~ 30 nm) and the high-temperature-resistant backbone structure constructed by the hard template method were retained after multiple catalytic catalysis reactions with ammonium perchlorate (AP, a oxidant with adiabatic temperature rise up to 1000 °C). Combining AP and TiOx/ZnO-AC with solvent-unsolvent method, the initial decomposition temperature of AP was advanced by about 28 °C and overall decomposition time was reduced by 24 % through the domain-limited mass transfer effect of the ordered macroporous structure. More importantly, the NH3 oxidation products of AP decomposition was efficiently transferred to N2O (86.7 %), DFT calculations showed that TiOx/ZnO-AC was able to adsorb and convert NH3 and HClO4generated from the initial decomposition of AP, which accelerated the rapid movement of AP decomposition equilibrium in conjunction with the gas transport channel of 3D pores. This work provides a new strategy for the design of high thermal stability catalysts in non-homogeneous reactions with the synergistic control of ‘structure-mass transfer-activity’.

合写作者：Tang Xiaolin,Zhou Yuming,Yuan Bo,Lu Zhican,Ding Chongtao,Cheng Weihang,Liu Yixin

论文类型：期刊论文

通讯作者：Zhou Peng*,Wang Xingang*,Huang Chi*

学科门类：理学

文献类型：J

卷号：523

页面范围：168092

是否译文：否

发表时间：2025-10-06

收录刊物：SCI

发布期刊链接：https://doi.org/10.1016/j.cej.2025.168092