Catalytic Cracking of Waste Cooking Oil for the Production of Synthesis Gas

Li, Qin; Zhengshun, Wu; Xiao, Shaofei; Liu, Xiaoyan; Sun, Tingting; Wu, Qiangxian; Zhang, Yu

doi:10.1166/jbmb.2013.1357

Cited by 5 publications

(6 citation statements)

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“…However, some studies use different technologies with other types of biofuels produced through the valorization of WCO, such as the production of hydrogen-rich syngas in gasification, bio-oils through various types of pyrolysis, and biokerosene, among others. Table 3 shows the leading technologies used to produce biofuel and the product of that technology [23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: First Generation Second Generation Third Generationmentioning

confidence: 99%

Turning Waste Cooking Oils into Biofuels—Valorization Technologies: A Review

et al. 2021

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In search of a more sustainable society, humanity has been looking to reduce the environmental impacts caused by its various activities. The energy sector corresponds to one of the most impactful activities since most energies produced come from fossil fuels, such as oil and coal, which are finite resources. Moreover, their inherent processes to convert energy into electricity emit various pollutants, which are responsible for global warming, eutrophication, and acidification of soil and marine environments. Biofuels are one of the alternatives to fossil fuels, and the raw material used for their production includes vegetable oils, wood and agricultural waste, municipal waste, and waste cooking oils (WCOs). The conventional route for WCO valorization is the production of biodiesel, which, as all recovery technologies, presents advantages and disadvantages that must be explored from a technical and economic perspective. Despite its successful use in the production of biodiesel, it should be noticed that there are other approaches to use WCO. Among them, thermochemical technologies can be applied to produce alternative fuels through cracking or hydrocracking, pyrolysis, and gasification processes. For each technology, the best conditions were identified, and finally, projects and companies that work with this type of technology and use WCO were identified.

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Section: First Generation Second Generation Third Generationmentioning

confidence: 99%

Turning Waste Cooking Oils into Biofuels—Valorization Technologies: A Review

et al. 2021

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“…[1][2][3][4] To date, several different hydrogen production processes have been studied and applied, including water electrolysis, 5 water photolysis 6 and hydrocarbon partial oxidation and reforming. [7][8][9][10] In addition to these processes, thermochemical pathways for the production of hydrogen/syngas by decomposition of methane, 11,12 ethanol, 13,14 as well as catalytic cracking of waste cooking oil (WCO), [15][16][17] are receiving increasing attention. WCO refers to a variety of oil wastes from natural vegetable oils and animal fats that lose edible value in the process of cooking or deep processing.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23] So far, there are very few reports of hydrogen production using WCO as a raw material. Li et al 16 compared the effects of different catalysts, that is, Fe 2 O 3 , Al 2 O 3 , CaO and coke, on the cracking of waste domestic oil to produce hydrogen. Their experimental results showed that under the same reaction conditions, the efficiency of waste domestic oil cracking was higher when using Fe 2 O 3 as a catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…Considering this background, we were interested in using a waste cooking oil model compound (WCOMC) as raw material to produce hydrogen and CNTs simultaneously by catalytic cracking. Although there have been some studies examining the catalytic cracking of WCO to produce hydrogen, these reports contain no descriptions of the produced carbon nanomaterials 15,16 . In this work, Ni‐Co bimetallic catalysts supported on SBA‐15 were synthesised to catalyse the cracking of WCOMC in a lab‐scale fixed bed.…”

Section: Introductionmentioning

confidence: 99%

“…Although there have been some studies examining the catalytic cracking of WCO to produce hydrogen, these reports contain no descriptions of the produced carbon nanomaterials. 15,16 In this work, Ni-Co bimetallic catalysts supported on SBA-15 were synthesised to catalyse the cracking of WCOMC in a labscale fixed bed. The effects of the nickel and cobalt metal content and the reaction temperature on the instantaneous volume fraction and content of the gas products were investigated.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

Liu

2020

Int J Energy Res

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Hydrogen is considered an ideal energy carrier. However, the use of fossil fuels to produce hydrogen depletes natural resources and causes environmental problems. Therefore, there is an urgent need to find alternative raw materials and technologies for the production of hydrogen. Waste cooking oil (WCO) is a renewable energy source that has emerged as a potential raw material for hydrogen production. This study describes the production of hydrogen and carbon nanotubes (CNTs) by catalytic cracking of a WCO model compound (WCOMC) performed in a lab-scale fixed bed using Ni-Co/SBA-15 catalysts. The phase, structure and reduction properties of the catalyst were analysed by using different characterisation methods. The effects of the nickel-cobalt metal content and the reaction temperature on both the hydrogen production and the quality of the CNTs were investigated. The deposited carbonaceous products were characterised to analyse their external appearance, internal structure, oxidation stability and graphitisation degree. The results indicated that the catalyst containing 20% Ni and 30% Co showed the highest activity. When reaction temperature was 800 C, the instantaneous volume fraction of hydrogen was close to 43.5 vol% and the content of hydrogen in the gas product was close to 66.5 vol%. A few multi-walled CNTs having a small diameter and some CNTs with an open-topped structure were deposited on 10%Ni-40%Co/SBA-15 and 30%Ni-20%Co/SBA-15, respectively. Thermogravimetric analysis and Raman spectroscopic analysis indicated that all CNTs showed high oxidation stability and a high degree of graphitisation.

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