Catalytic Cracking of Waste Cooking Oil to Alkane-Based Hydrocarbon Over Activated Carbon Supported La and Ce Oxides

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2024-09-12 DOI:10.1007/s10562-024-04807-7

Samah Zaki Naji, Ching Thian Tye, Abdul Rahman Mohamed

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Abstract

The increasing global demand for fuel, along with pressing environmental regulations and concerns, and the need for energy security, all point to the biofuel industry seeing rapid growth in the near future. The objective of this study was to study the performance of a series of activated carbon (AC) supported La and Ce oxide catalysts in the catalytic cracking of waste cooking oil into alkane-based hydrocarbon. Coconut-shell activated carbon was loaded with various amounts of lanthanum and cerium were prepared via wet impregnation. The catalytic cracking activity was evaluated in a fixed bed reactor under N₂ flow at 450 °C and a weight hourly space velocity of 8 h⁻¹ at 60 min. The physical and chemical properties of the prepared catalysts were characterized by BET, SEM–EDX, XRD, TPD-NH₃/CO₂, FTIR, and TGA. The results indicated that 5 wt% La/AC performed superiorly with a liquid product of 87.03% which composed of 99.09% hydrocarbons, that were mostly alkane (79.89%) with n-(C₁₅ + C₁₇) 66% selectivity (66.13%).

Graphical Abstract

Abstract Image

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以 La 和 Ce 氧化物为支撑的活性炭催化裂解废食用油生成烷基碳氢化合物

全球对燃料的需求与日俱增，加上紧迫的环境法规和担忧，以及对能源安全的需求，所有这些都预示着生物燃料产业在不久的将来会迅速发展。本研究旨在研究一系列活性炭（AC）支撑的 La 和 Ce 氧化物催化剂在催化裂解废弃食用油为烷基碳氢化合物过程中的性能。通过湿法浸渍制备了负载不同量镧和铈的椰壳活性炭。在固定床反应器中，在 450 ℃、8 h-1 重量时空速度和 60 分钟氮气流条件下，对其催化裂解活性进行了评估。BET、SEM-EDX、XRD、TPD-NH3/CO2、FTIR 和 TGA 表征了所制备催化剂的物理和化学特性。结果表明，5 wt% 的 La/AC 性能优越，液体产物的含量为 87.03%，其中 99.09% 为碳氢化合物，大部分为烷烃（79.89%），正（C15 + C17）选择性为 66%（66.13%）。

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.