摘要：Cerium‐based catalysts are very attractive for the catalytic abatement of nitrogen oxides(NOx)emitted from stationary ***,the main challenge is still achieving satisfactory catalytic activity in the low‐temperature range and tolerance to SO2 *** the present work,two series of Mo‐modified CeO_(2)catalysts were respectively obtained through a wet impregnation method(Mo‐CeO_(2))and a co‐precipitation method(MoCe‐cp),and the roles of the Mo species were systematically *** tests showed that the Mo‐CeO_(2)catalyst displayed much higher NO conversion at low temperature and anti‐SO2 ability than MoCe‐*** optimal Mo‐CeO_(2)catalyst displayed over 80%NO elimination efficiency even at 150°C and remarkable SO2 resistance at 250°C(nearly no activity loss after 40 h test).The characterization results indicated that the introduced Mo species were highly dispersed on the Mo‐CeO_(2)catalyst surface,thereby providing more Brønsted acid sites and inhibiting the formation of stable adsorbed NOx *** factors synergistically promote the selective catalytic reduction(SCR)reaction in accordance with the Eley‐Rideal(E‐R)reaction path on the Mo‐CeO_(2)***,the molybdenum surface could protect CeO_(2)from SO2 poisoning;thus,the reducibility of the Mo‐CeO_(2)catalyst declined slightly to an adequate level after *** results in this work indicate that surface modification with Mo species may be a simple method of developing highly efficient cerium‐based SCR catalysts with superior SO2 durability.

摘要：为探究纬纱中不同功能性纤维含量、纬密和织物组织对抗紫外吸湿排汗复合功能织物的性能影响,选择吸湿排汗涤纶长丝、抗紫外涤纶短纤纱和吸湿排汗涤纶短纤纱作为原料,以投纬比例、纬密、织物组织作为变化因子,设计并织造了3个系列共24种不同规格的机织物试样。文章对这24种试样的抗紫外性和吸湿排汗性进行测试,结果表明:抗紫外性总体随着纬纱中抗紫外涤纶纤维含量、纬密的增大而增强,织物组织结构越紧密,其抗紫外性能越好;吸湿排汗性总体随着纬纱中吸湿排汗涤纶纤维含量的增大而增强,但纬密增大会一定程度降低织物的吸湿排汗性,织物组织结构越稀疏,其吸湿排汗性则越好。基于模糊数学综合评判法的数学模型,对3个系列试样分别进行模糊综合评判,判断出A系列中综合性能最佳的为纬纱中抗紫外涤纶纤维含量33.33%、吸湿排汗涤纶纤维含量66.67%的试样;B系列中综合性能最佳的为纬纱中抗紫外涤纶纤维含量20%、吸湿排汗涤纶纤维含量80%的试样;C系列中综合性能最佳的是织物组织为八枚缎纹的试样。