Liquid hydrocarbon fuels from jatropha oil through catalytic cracking technology using AlMCM-41/ZSM-5 composite catalysts

Ramya, G.; Sudhakar, R.; Joice, J. Amala Infant; Ramakrishnan, Rajkumar; Thiripuranthagan, Sivakumar

doi:10.1016/j.apcata.2012.05.011

Cited by 71 publications

(29 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…All long-chain alkanes were subject to hydroisomerization and hydrocracking owing to an abundance of acidic sites in the zeolite support. CO 2 and CO may have reacted with H 2 to produce CH 4 and H 2 O. This reaction scheme is similar to that of the supported Ni catalysts referred to previously.…”

Section: Hydrotreatment Of Fames Over Ni/hb Zeolitementioning

confidence: 67%

See 1 more Smart Citation

Catalytic Hydrotreatment of Fatty Acid Methyl Esters to Diesel‐like Alkanes Over Hβ Zeolite‐supported Nickel Catalysts

Chen

Yang

et al. 2014

ChemCatChem

View full text Add to dashboard Cite

A Ni/Hβ zeolite catalyst was prepared for the selective transformation of fatty acid methyl esters (FAMEs) into diesel‐like alkanes through hydrotreatment. Characterization of the physicochemical properties of a 10 wt % nickel‐loaded, Hβ zeolite support indicated that nickel(II) oxide aggregated into large particles approximately 23.9 nm in size, whereas nickel aggregated into particles 18.3 nm in size, significantly increasing the total acid sites of Hβ zeolite after hydrogen reduction. The reaction scheme of the whole FAME transformation was investigated by using a batch reactor. It was found that FAMEs were first hydrogenated mainly to saturated fatty acids, followed by hydrodeoxygenation without carbon loss, the main route toward alkanes. The hydrotreatment of FAMEs by decarboxylation or decarbonylation was favored at high temperatures and low hydrogen pressures on Hβ zeolite with higher nickel loadings. The metallic and acidic functionalities of nickel/Hβ zeolite catalysts exhibited a synergistic effect in hydrodeoxygenation without carbon loss, achieving high FAME conversion and yields of liquid C16 and C18 alkanes. Optimal catalytic performances were obtained with 10 wt % nickel loading over Hβ zeolite (Si/Al=25) at 270 °C with a pressure of 1.0 MPa H2 over 8 h. A maximum alkane product yield of 93.2 % was achieved for C15–C18 alkanes with complete FAME conversion. 80.3 % FAME conversion could was achieved after eight reaction cycles by using the nickel/Hβ zeolite catalyst with calcination after every use.

show abstract

Section: Hydrotreatment Of Fames Over Ni/hb Zeolitementioning

confidence: 67%

“…This observation was attributed to the decarboxylation or decarbonylation of hexadecanoic acid and saturated octadecanoic acid with carbon loss in the form of CO 2 and CO during hydrotreatment. CO 2 and CO could then be further transformed to CH 4 as shown in Equation (3) and (4):…”

Section: Hydrotreatment Of Fames Over Ni/hb Zeolitementioning

confidence: 99%

Catalytic Hydrotreatment of Fatty Acid Methyl Esters to Diesel‐like Alkanes Over Hβ Zeolite‐supported Nickel Catalysts

Chen

Yang

et al. 2014

ChemCatChem

View full text Add to dashboard Cite

show abstract

“…This process has an advantage over biodiesel production via transesterification, including lower processing costs, compatibility with engines and fuel standard, and feedstock flexibility without considering the level of free fatty acid Sharma 2012: Ramya et al 2012). Pyrolysis of vegetable oils, which is a direct thermal decomposition method, operates at very high temperature (400-750°C) and yields mostly gaseous products containing straight chain hydrocarbon fuels (Ramya et al 2012). The catalytic cracking can convert vegetable oils into hydrocarbons in the absence of oxygen at atmospheric pressure and at relatively low temperature (300-600°C; Lima et al 2004).…”

Section: Gasoline and Diesel Range Hydrocarbons From Waste Vegetable mentioning

confidence: 99%

Energy from Waste Materials and Unconventional Sources

Demırbas

2016

Waste Energy for Life Cycle Assessment

View full text Add to dashboard Cite

“…Using catalyst in cracking reaction is much more common than direct thermal cracking. [8][9][10][11] It was evident that the pyrolytic product could be obtained with high percentages of hydrocarbons, but also exhibited high carboxylic acids content (acid value >110 mg KOH/g). 4 Base catalysts such as CaO have also shown to be effective at cracking reaction, with which the acid value of pyrolytic product was lowed approach 50 mg KOH/g.…”

Section: Introductionmentioning

confidence: 99%

Diesel-like fuel production from catalytic cracking and esterification of waste oil

Chen

Jiang

Nie

et al. 2013

Journal of Renewable and Sustainable Energy

View full text Add to dashboard Cite

The process of producing diesel-like fuel from combination of catalytic cracking with catalytic esterification was studied. The optimal technological conditions were obtained as follows: CaO as cracking catalyst, distillation temperature 320 -350 C, cracking temperature 480 -500 C, adding rate of waste oil feedstock 35 g/h, and sodium bisulfate as esterification catalyst with the amount 3 wt. % of pyrolytic product, and molar ratio 0.4 (methanol to pyrolytic product). Results of Fourier transform infrared spectroscopy (FTIR) indicated that the fraction distribution of product was modified by catalytic cracking process, and gas chromatography-mass spectrometry (GC-MS) analysis showed the esterification products consist of alkanes, alkenes, aldehyde, and fatty acid methyl ester of short chains below C 16 . And the acid value of pyrolytic product from the esterification process decreased remarkably from 40 mg KOH/g to 1.6 mg KOH/g. The properties of the final fuel product were measured as follows: density of 850 kg/m 3 , viscosity of 3.05 mm 2 /s, freezing point of À9 C, and cold filter plugging point of À4 C, indicating that the fraction distribution, properties, and applicability of the product from combination process were also further improved. V C 2013 AIP Publishing LLC. [http://dx.

show abstract

Liquid hydrocarbon fuels from jatropha oil through catalytic cracking technology using AlMCM-41/ZSM-5 composite catalysts

Cited by 71 publications

References 40 publications

Catalytic Hydrotreatment of Fatty Acid Methyl Esters to Diesel‐like Alkanes Over Hβ Zeolite‐supported Nickel Catalysts

Catalytic Hydrotreatment of Fatty Acid Methyl Esters to Diesel‐like Alkanes Over Hβ Zeolite‐supported Nickel Catalysts

Energy from Waste Materials and Unconventional Sources

Diesel-like fuel production from catalytic cracking and esterification of waste oil

Contact Info

Product

Resources

About