A facile, rapid, and energy-saving gel-like-solid method was applied to prepare zeolites from natural minerals. Using potassic rocks (PRs) activated by the alkali fusion decomposition method together with silica-alumina xerogel as silicon- and aluminum-species, zeolite P has been successfully synthesized via gel-like-solid phase method. The effects of crystallization time (t), crystallization temperature (T), m (PRs)/m (xerogel) ratios, and n(H₂O)/n (SiO₂) ratios on the crystallinity and morphology of zeolite P were investigated. The optimal synthesis conditions were m (PRs)/m (xerogel) of 0.185, n(H₂O)/n (SiO₂) of 28.12, crystallization t of 3 h, and crystallization T of 140°C. The synthesized zeolite P featuring high crystallinity possessed spherical morphology aggregated by small grains and was applied in the ion exchange for Ca²⁺ and Mg²⁺ ions. The maximum Ca²⁺ and Mg²⁺ ions exchange capacities of zeolite P could reach 415 mgCaCO₃·g⁻¹ and 162 mgMgCO₃·g⁻¹, respectively. Compared with other published materials, the synthesized zeolite P exhibited satisfactory Ca²⁺ and Mg²⁺ ions exchange capacities. The above results demonstrated that the gel-like-solid phase method could shorten the crystallization t and enhance the crystallinity of zeolites synthesized from natural minerals and solid waste, showing a great potential in actual applications.

中文翻译：

---

类凝胶固相法从钾质岩中快速合成沸石P

一种简便、快速、节能的凝胶状固体方法被应用于从天然矿物中制备沸石。使用碱熔分解法活化的钾质岩 (PRs) 以及二氧化硅-氧化铝干凝胶作为硅和铝物种，通过类凝胶固相法成功合成了沸石 P。研究了结晶时间 ( t )、结晶温度 ( T )、m (PRs)/ m (干凝胶) 比和n (H ₂ O)/ n (SiO ₂ ) 比对沸石 P 结晶度和形貌的影响. 最佳合成条件为m (PRs)/ m(干凝胶) 为 0.185，n (H ₂ O)/ n (SiO ₂ ) 为 28.12，结晶t为 3 小时，结晶T为 140°C。合成的沸石P具有高结晶度，具有小颗粒聚集的球形形态，可用于Ca ²⁺和Mg ²⁺离子的离子交换。沸石P的最大Ca ²⁺和Mg ²⁺离子交换容量可达415 mgCaCO ₃ ·g ^-1和162 mgMgCO ₃ ·g ^-1， 分别。与其他公开的材料相比，合成的沸石P表现出令人满意的Ca ²⁺和Mg ²⁺离子交换能力。上述结果表明，凝胶状固相法可以缩短天然矿物和固体废物合成沸石的结晶时间，提高其结晶度，在实际应用中显示出巨大的潜力。