采用生物质模板(茶花粉)掺杂制备SAPO-34分子筛,研究了SAPO-34分子筛对CO₂和CH₄的静态吸附性能,同时考察了水热晶化时间、硅铝摩尔比(SiO₂/Al₂O₃摩尔比)和有机模板剂对茶花粉掺杂合成SAPO-34分子筛的影响。结果表明,茶花粉的加入可以制备性能良好的SAPO-34分子筛并降低其尺寸在1~2 μm之间;晶化时间(24~36 h)的延长有利于分子筛结晶;当硅铝比为0.6、有机模板剂摩尔比为2时,SAPO-34分子筛的晶化效果最佳。茶花粉清液合成的SAPO-34分子筛在静态吸附实验压力为100 kPa时,CO₂和CH₄的总吸附量分别为2.92 mmol/g和0.58 mmol/g,CO₂/CH₄的理想分离系数为5.05。

SAPO-34 molecular sieve is prepared by doping biomass template (camellia powder).Static adsorption properties of SAPO-34 molecular sieve for CO₂ and CH₄ are investigated,and the influence of hydrothermal crystallization time,the molar ratio of silicon to aluminum and organic template on the synthesis of SAPO-34 molecular sieve by doping camellia powder are probed.The results show that the addition of camellia powder can aid in preparation of SAPO-34 molecular sieve and reduce its size by 1-2 μm.The prolongation of crystallization time (24-36 h) is conducive to the crystallization of molecular sieve.SAPO-34 molecular sieve shows the optimal crystallization effect when the molar ratio of silicon to aluminum is 0.6 and the ratio of organic template is 2.Under a 100 kPa of static adsorption experimental pressure,SAPO-34 molecular sieve synthesized from camellia powder clear liquid can adsorb 2.92 mmol·g^-1 of CO₂ and 0.58 mmol·g^-1 of CH₄,respectively,and the ideal separation coefficient of CO₂/CH₄ is 5.05.