| 肖小兰1,2, 刘颂家1， 谢利娟1， 阮文权1，2.多孔Pt/SAPO-11的合成及其催化厨余垃圾
油脂制备生物航空煤油研究[J].中国油脂,2026,51(4):.[XIAO Xiaolan1,2，LIU Songjia1，XIE Lijuan1，RUAN Wenquan1,2.Synthesis of porous Pt/SAPO-11 and its catalytic performance in bio-jet fuel production from kitchen waste oil[J].China Oils and Fats,2026,51(4):.] |
| 多孔Pt/SAPO-11的合成及其催化厨余垃圾
油脂制备生物航空煤油研究 |
| Synthesis of porous Pt/SAPO-11 and its catalytic performance in bio-jet fuel production from kitchen waste oil |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250140 |
| 中文关键词: Pt/SAPO-11 催化剂改性 厨余垃圾油脂 生物航空煤油 |
| 英文关键词:Pt/SAPO-11 catalyst modification kitchen waste oil bio-jet fuel |
| 基金项目:国家重点研发计划绿色生物制造专项（2021YFC2102200） |
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| 中文摘要: |
| 为开发催化厨余垃圾油脂制备生物航空煤油的催化剂，通过传统水热合成法制备微孔SAPO-11分子筛，优化其制备条件，然后采用柠檬酸和介孔模板剂〔十六烷基三甲基溴化铵（CTAB）、二甲基十八烷基\[3-（三甲氧基硅）丙基\]氯化铵（DM,有机硅季铵盐）〕分别对其改性制备多孔SAPO-11分子筛，优化了柠檬酸浓度和介孔模板剂添加量，以此为载体负载铂（Pt）合成多孔Pt/SAPO-11催化剂，对该催化剂进行了表征，并考察了其催化厨余垃圾油脂制备生物航空煤油的性能。结果表明：微孔SAPO-11分子筛合成的最优条件为硅铝比（Al2O3与SiO2物质的量比）0.35、晶化温度200 ℃、晶化时间24 h，在此条件下合成的微孔SAPO-11分子筛结晶度较好；柠檬酸浓度和CTAB、DM添加量分别为0.1 mol/L和5%、3.1%条件下，改性的SAPO-11分子筛介孔孔容、比表面积较大，结晶度较好；制备的多孔催化剂中，Pt/SAPO-11-CTAB（CTAB添加量5%）具有最好的结构性质，以其为催化剂催化厨余垃圾油脂制备生物航空煤油，油脂转化率达到99.34%，C8～C16烷烃选择性达到40.54%，烷烃产物中异/正构比达到052，且催化剂重复使用5次后仍保留较好的催化活性。综上，采用CTAB对微孔SAPO-11分子筛进行改性并负载Pt制备的多孔Pt/SAPO-11催化剂，可用于催化厨余垃圾油脂制备生物航空煤油。 |
| 英文摘要: |
| To develop a catalyst for the catalytic conversion of kitchen waste oil into bio-jet fuel, microporous SAPO-11 molecular sieve was synthesized by the conventional hydrothermal method, its preparation conditions were optimized. Subsequently, porous SAPO-11 molecular sieves were prepared by modifying the synthesized microporous SAPO-11 using citric acid and mesoporous templates of cetyltrimethylammonium bromide (CTAB) and dimethyloctadecyl \[3-(trimethoxysilyl) propyl\] ammonium chloride (DM, organosilicon quaternary ammonium salt). The citric acid concentration and the dosage of mesoporous templates were optimized, and the modified SAPO-11 was utilized as a support to load platinum(Pt)for the synthesis of porous Pt/SAPO-11 catalyst. The prepared catalyst was characterized, and its catalytic performance for the conversion of kitchen waste oil into bio-jet fuel was investigated. The results indicated that the optimal synthesis parameters for the microporous SAPO-11 molecular sieve were determined as follows: silica-to-alumina molar ratio (Al2O3/SiO2) 0.35, crystallization temperature 200 ℃, and crystallization time 24 h. Under these conditions, the synthesized microporous SAPO-11 showed excellent crystallinity. The modified SAPO-11 molecular sieve obtained at a citric acid concentration of 0.1 mol/L and template dosages of 5% CTAB and 3.1% DM featured a large mesoporous pore volume, a high specific surface area, and superior crystallinity. Among all the prepared catalysts, Pt/SAPO-11-CTAB(CTAB dosage 5%) exhibited the most desirable structural characteristics. When employed for the catalytic conversion of kitchen waste oil, this catalyst achieved a conversion rate of 99.34% for kitchen waste oil, a selectivity of 40.54% for C8-C16 alkanes, and an iso/n-alkane ratio of 0.52 in the alkane products, and the catalyst retained good catalytic activity even after five reuses. In summary, the porous Pt/SAPO-11 catalyst, derived from CTAB-modified microporous SAPO-11 with Pt loading, is a promising candidate for the catalytic conversion of kitchen waste oil into bio-jet fuel. |
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