A series of Cu/TiO₂ catalysts was successfully synthesized by ice melting method for the first time, and their performance for the selective catalytic reduction of NOx with NH₃ was evaluated. The catalyst with Cu/Ti molar ratio of 0.005 exhibited excellent catalytic performance at low temperature. Compared with the traditional co-precipitation method (Cu0.005Ti-Con), the NOx conversion (at 285 °C) and N₂ selectivity (at 240 °C) of Cu/TiO₂ synthesized by ice melting (named as Cu0.005Ti-Ice) increased by 30 % and 10 %, respectively. Characterization results revealed that Cu0.005Ti-Ice exhibited outstanding physicochemical properties, including smaller grain size of particles, the well dispersion and high surface atomic concentration of Cu species, enrichment of Cu²⁺ species (34.54 %) and chemical absorbed oxygen species (19.96 %), and excellent redox capacity and acidity. These conditions provided the CuTi-Ice catalysts with enhanced deNOx performance at low temperature. Additionally, the inhibition of the non-selective catalytic reduction and NH₃ catalytic oxidation on Cu0.005Ti-Ice catalysts reduced N₂O and NO₂ concentration, resulting in outstanding SCR activity at low temperature.

首次通过冰融法成功合成了一系列Cu / TiO ₂催化剂，并评价了其对NH ₃选择性催化还原NOx的性能。Cu / Ti摩尔比为0.005的催化剂在低温下表现出优异的催化性能。与传统的共沉淀法（Cu0.005Ti-Con）相比，Cu / TiO ₂的NOx转化率（285°C）和N ₂选择性（240°C）通过冰融化（称为Cu0.005Ti-Ice）合成的金属分别增加了30％和10％。表征结果表明，Cu0.005Ti-Ice具有优异的理化性质，包括较小的颗粒尺寸，良好的分散性和较高的Cu种类原子原子浓度，Cu ²⁺种类的富集（34.54％）和化学吸收的氧种类（19.96 ％），以及优异的氧化还原能力和酸度。这些条件为CuTi-Ice催化剂在低温下提供了增强的脱硝性能。另外，在Cu0.005Ti-Ice催化剂上抑制非选择性催化还原和NH ₃催化氧化还原了N ₂ O和NO ₂ 浓度高，导致低温下出色的SCR活性。