SAPO-34, SAPO-5/34 based catalysts doped with Cu, Ce as active components were synthesized via a one-pot hydrothermal method by using different amounts of additive (α-cellulose), and their catalytic activities were measured for selective catalytic reduction (SCR) of NO with NH₃. The synthesized Cu–Ce co-doped products switch from cubic SAPO-34, to flower-like aggregated SAPO-5/34, hybrid crystal SAPO-5/34, and finally to spherical aggregated SAPO-34 with the increase of α-cellulose amount. The Cu–Ce co-doped SAPO-5/34 hybrid crystal structure catalysts with 0.75 mol ratios of C/P (Cu–Ce/SP-0.75) exhibit excellent NH₃-SCR activity with higher than 90% NO_x conversion in the temperature range of 180–450 °C, at WHSV of 20000 mL/(g·h). Furthermore, the catalyst displays outstanding sulfur resistance and NO_x conversion maintains above 90% at 200–450 °C after adding 100 ppm of SO₂. The characteristic results suggest that the high deNO_x performance of Cu–Ce/SP-0.75 is due to the enhanced accessibility, abundant activity species, excellent redox property and high adsorptive and activated capacity for NH₃.

以不同用量的α-纤维素为原料，通过一锅水热法合成了以Cu、Ce为活性组分掺杂的SAPO-34、SAPO-5/34基催化剂，并测定了它们对选择性催化还原的催化活性(SCR) NO 与 NH ₃。随着α-纤维素的增加，合成的Cu-Ce共掺杂产物从立方体SAPO-34转变为花状聚集体SAPO-5/34、杂晶SAPO-5/34，最终转变为球形聚集体SAPO-34数量。C/P 摩尔比为 0.75 (Cu-Ce/SP-0.75) 的 Cu-Ce 共掺杂 SAPO-5/34 杂化晶体结构催化剂表现出优异的 NH ₃ -SCR 活性，NO _x高于 90%在 180–450 °C 的温度范围内转化，WHSV 为 20000 mL/(g·h)。此外，该催化剂在加入 100 ppm SO ₂后，在 200–450 °C下显示出出色的抗硫性和 NO _x转化率保持在 90% 以上。特性结果表明，高DENO _X的Cu-CE / SP-0.75的性能是由于增强的可访问性，丰富的活性物种，优异的氧化还原性质和高吸附和活化的能力NH ₃。