Synthesis, characterization and reactivity of high hydrothermally stable Cu-SAPO-34 materials prepared by one-pot processes
Synthesis, characterization and reactivity of high hydrothermally stable Cu-SAPO-34 materials prepared by one-pot processes
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DOI：
10.1016/j.jcat.2014.03.018
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发表时间：
2014-05
影响因子：
7.3
通讯作者：
R. Martínez-Franco;M. Moliner;P. Concepción;J. R. Thøgersen;A. Corma
中科院分区：
文献类型：
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作者：
R. Martínez-Franco;M. Moliner;P. Concepción;J. R. Thøgersen;A. Corma
经过顺序合理化设计，合成了一种具有非常高的选择性催化还原（SCR）NOx活性和水热稳定性的Cu-SAPO-34材料。通过在“一锅法”中使用有机结构导向剂 (OSDA) 和凝胶组合物的特定组合，可以控制 Cu 占有率、骨架 Si 分布，并最大限度地提高固体产量。即使在 750 °C 下蒸煮 13 小时后，Cu2+ 的含量也达到最大并保持稳定。
A Cu-SAPO-34 material with very high activity for selective catalytic reduction (SCR) of NOx and hydrothermal stability has been synthesized following a sequential rationalized design. By using specific combinations of organic structure directing agents (OSDAs) and gel compositions in a “one-pot” method, it was possible to control Cu occupancy, framework Si distribution, and to maximize the yield of solids. The amount of Cu2+is maximized and remains stable even after steaming at 750 °C for 13 h.