Performance of Pd and Pt noble metal impregnated on Lapindo mud-based mesoporous silica on hydrotreatment of waste cooking oil into biogasoline

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Materials Today Sustainability Pub Date : 2024-09-05 DOI:10.1016/j.mtsust.2024.100978

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Abstract

In the present work, an alternative pathway to produce liquid biogasoline with low aromatic value was done via catalytic hydrotreatment of waste cooking oil (WCO) over noble metal (Pd and Pt) loaded on cost-effective mesoporous silica (MS) synthesized from Lapindo mud. The implementation of 1.82 and 1.53 SiO₂/CTAB (cetyltrimethylammonium bromide) weight ratio successfully produced Lp-MS with average diameters of 5.1 (Lp-MS1) and 4.7 nm (Lp-MS2), respectively. The XRD analysis showed a better dispersion for Pt with a considerably smaller particle size and TEM image revealed that while Pt was shown to occupy both external and internal surface of Lp-MS1, Pd was only present on the outer part of Lp-MS2. During the hydrotreatment of WCO using a semi-batch reactor, Pd/Lp-MS2 exhibited a superior deoxygenation and hydrogenation capacity than Pt/Lp-MS1 by generating over 60.9% liquid biofuel with 86.75% selectivity towards gasoline-range hydrocarbon. The liquid product obtained from the catalytic hydrotreatment contained very low aromatic compound (<4%) which was known to be responsible in the emission of harmful gas during fuel combustion. This result can be maintained for at least 4 consecutive runs. This study offers another efficient pathway to produce a cleaner source of energy in the form of biogasoline fuel.

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浸渍在拉平多泥基介孔二氧化硅上的钯和铂贵金属在将废食用油加氢处理成生物汽油过程中的表现

在本研究中，通过在由 Lapindo 泥合成的具有成本效益的介孔二氧化硅（MS）上负载贵金属（钯和铂），对废食用油（WCO）进行催化加氢处理，找到了生产低芳烃值液体生物汽油的替代途径。采用 1.82 和 1.53 的 SiO2/CTAB（十六烷基三甲基溴化铵）重量比，成功制备出平均直径分别为 5.1（Lp-MS1）和 4.7 nm（Lp-MS2）的 Lp-MS。XRD 分析表明，铂的分散性更好，粒径更小，而 TEM 图像显示，铂占据了 Lp-MS1 的内外表面，而钯只存在于 Lp-MS2 的外部。在使用半间歇反应器对 WCO 进行加氢处理的过程中，Pd/Lp-MS2 的脱氧和加氢能力优于 Pt/Lp-MS1，可生成 60.9% 以上的液态生物燃料，对汽油级碳氢化合物的选择性高达 86.75%。从催化加氢处理中获得的液体产品含有极少的芳香族化合物（4%），而众所周知，芳香族化合物是燃料燃烧过程中排放有害气体的罪魁祸首。这一结果至少可以连续保持 4 次。这项研究为生产生物汽油燃料形式的清洁能源提供了另一种有效途径。

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来源期刊

Materials Today Sustainability Multiple-

CiteScore

5.80

自引率

6.40%

发文量

174

审稿时长

32 days

期刊介绍： Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.