In this work, two pairs of silicon and aluminium sources (sodium silicate solution + Al(OH)₃ and sodium silicate powder + sodium aluminate) were used for synthesizing zeolites which were labeled as Z1 and Z2, respectively. The results from XRD, BET and surface analysis indicated that sodium silicate and sodium aluminate sources yielded zeolite with high surface area and pore volume. Cetyltrimethylammonium bromide (CTAB) and heptane were used to modify the CO₂ adsorption capacity and selectivity of zeolite NaX. The surface area and pore volume of zeolite products increased due to smaller crystalline size and then resulted in significant enhancement of CO₂ uptake of the synthesized zeolite NaX. The role of additives on zeolite formation was to increase the nuclei formation rate and number which gave rise to smaller zeolite crystals. The best adsorbent exhibited high CO₂ adsorption capacity (5.08 mmol g⁻¹ at 303 K) and relatively high CO₂ selectivity over N₂ (116) which indicated the potential of adsorbent to separate CO₂ from flue gas application.

在这项工作中，使用两对硅和铝源（硅酸钠溶液+ Al（OH）₃和硅酸钠粉末+铝酸钠）来合成分别标记为Z1和Z2的沸石。XRD，BET和表面分析的结果表明，硅酸钠和铝酸钠源产生具有高表面积和孔体积的沸石。十六烷基三甲基溴化铵（CTAB）和庚烷用于改变沸石NaX的CO ₂吸附能力和选择性。沸石产品的表面积和孔体积由于较小的晶体尺寸而增加，然后导致CO _2的显着提高。合成沸石NaX的吸收。添加剂对沸石形成的作用是增加核形成速率和核数目，从而产生较小的沸石晶体。最好的吸附剂表现出高的CO ₂吸附容量（在303 K下为5.08 mmol g ^-1）和相对于N ₂（116）的相对较高的CO ₂选择性，表明吸附剂有可能从烟气中分离出CO ₂。