In the present work, highly efficient catalytic adsorbents for Hg⁰ removal in both oxygen-rich and deficient atmosphere are developed based on an “adaption” strategy. Firstly, a series of simplified SiO₂-based catalytic adsorbents are prepared as model catalysts to gain a deeper insight into the mechanism of the catalytic Hg⁰ removal process. It is found that for the effective Hg⁰ removal, the catalytic adsorbent should possess an “assembling” structure involving both Hg⁰ and oxygen activation sites. An “adaption” strategy is thus implemented for the devise of the catalytic adsorbent, including the functional adaption of different active sites for the reactants and the synergistic function of different active sites. Accordingly, high-efficiency catalytic adsorbent with strong redox property is developed for oxygen-rich atmosphere, while the catalytic adsorbent with high oxygen storage/release property is developed for oxygen-deficient conditions. Moreover, regeneration investigation indicates that the activities of spent catalytic adsorbents are almost fully recovered through the temperature programmed decomposition and desorption (TPDD) process. It is believed that the present “adaption” strategy for catalyst design has guiding significance for the rational and controllable construction of catalysts for other catalytic processes.

在目前的工作中，基于“适应”策略，开发了在富氧和贫氧环境中均能高效去除Hg ^0的催化吸附剂。首先，制备了一系列简化的SiO ₂基催化吸附剂作为模型催化剂，以更深入地了解Hg ⁰催化去除过程的机理。已经发现，为了有效地除去Hg ⁰，催化吸附剂应具有同时包含Hg ⁰和Hg ⁰的“组装”结构。和氧气活化位点。因此实施“适应”策略以设计催化吸附剂，包括不同活性位点对反应物的功能适应性和不同活性位点的协同功能。因此，针对富氧气氛开发了具有强氧化还原特性的高效催化吸附剂，而针对缺氧条件开发了具有高储氧/释放特性的催化吸附剂。此外，再生研究表明，通过程序升温分解和脱附（TPDD）过程，几乎完全恢复了废催化吸附剂的活性。