Effect of bimetallic NiW modified crystalline ZSM‐5 zeolite on catalytic conversion of crude palm oil and identification of biofuel products

Subsadsana, Maliwan; Sangdara, Pakpoom; Ruangviriyachai, Chalerm

doi:10.1002/apj.2061

Cited by 12 publications

(6 citation statements)

References 27 publications

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“…According to Table , natural zeolite had a high surface area of 149.42 m 2 /g, which significantly decreased up to 56.11 and 68.58% after being impregnated with nickel and nickel phosphate species, respectively. The decrease in the zeolite surface area after being modified has been consistently reported in other studies. ,,,, This condition may be due to pore channel blocking of zeolite by nickel and nickel phosphate species . The surface area of zeolite-Ni is 65.57 m 2 /g, which is higher than that of zeolite-Ni(H 2 PO 4 ) 2 , which only had a surface area of 46.95 m 2 /g.…”

Section: Resultssupporting

confidence: 91%

“… 46 , 53 , 57 , 74 , 75 This condition may be due to pore channel blocking of zeolite by nickel and nickel phosphate species. 76 The surface area of zeolite-Ni is 65.57 m 2 /g, which is higher than that of zeolite-Ni(H 2 PO 4 ) 2 , which only had a surface area of 46.95 m 2 /g. Because the aggregate of nickel phosphate species was sufficiently bulk than nickel, this may lead the pores in or in the middle or center of the channel zeolite to be effectively blocked, thus leading zeolite-Ni(H 2 PO 4 ) 2 to generate a low surface area than zeolite-Ni.…”

Section: Resultsmentioning

confidence: 83%

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Enhanced Isopropyl Alcohol Conversion over Acidic Nickel Phosphate-Supported Zeolite Catalysts

et al. 2022

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In this preliminary research, the catalytic activity of isopropyl alcohol conversion to diisopropyl ether through dehydration reaction catalyzed by zeolite-Ni and zeolite-Ni(H2PO4)2 was comparatively described. The natural zeolite was treated with 1% HF and 6 N HCl prior to modifications using the impregnation method. Isopropyl alcohol conversion was examined at a mild temperature of 150 °C for 3.5 h on the reflux system with various catalyst loadings. X-ray diffraction and Fourier transform infrared analysis confirmed the successful impregnation of nickel and nickel phosphate into the zeolite. Scanning electron microscopy analysis revealed a cubic-like structure on zeolite-Ni(H2PO4)2, whereas homogenously distributed nickel species were observed on the zeolite-Ni catalyst. Energy-dispersive X-ray spectroscopy analysis reinforced the accomplishment of zeolite modifications. The N2 physisorption isotherms showed a decline in the surface area and total pore volume of the zeolite because of the blocking of pores. The zeolite-Ni(H2PO4)2 catalyst had higher acidity than unmodified zeolite and zeolite-Ni catalysts, which inherently suggested that the presence of phosphate groups results in higher catalytic activity toward isopropyl alcohol. The highest catalytic activity was attained by 8 mEq/g metal loading zeolite-Ni(H2PO4)2 with isopropyl alcohol conversion of 81.51%, diisopropyl ether yield, and selectivity of 40.77 and 33.16%. The reusability study suggested that the zeolite-Ni(H2PO4)2 catalyst was still active and had sufficient catalytic activity stability toward isopropyl alcohol after the third cycle was reused. This nickel phosphate-based modified zeolite was adequately potential for diisopropyl ether production through isopropyl alcohol dehydration.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 83%

Enhanced Isopropyl Alcohol Conversion over Acidic Nickel Phosphate-Supported Zeolite Catalysts

et al. 2022

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“…5. The FTIR spectrum contains a group of absorption bands where the peaks at around 520 and 465 cm -1 indicate the presence of fivemembered double rings, typical of beta zeolite and assigned to vibrations of T-O-T (T: Si or Al) siloxane bonds in the rings (Subsadsana et al 2016;Thakur et al 2016;Güleç et al 2016;Shanjiao et al 2007), respectively. The absorption band at around 805 cm -1 demonstrates internal bonds of the tetrahedral SiO 4 structural unit (Güleç et al 2016).…”

Section: Fourier Transform Infrared (Ftir) Analysismentioning

confidence: 99%

Catalytic performance of Cu- and Zr-modified beta zeolite catalysts in the methylation of 2-methylnaphthalene

2018

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2,6-Dimethylnaphthalene (2,6-DMN) is a commercially important chemical for the production of polyethylenenaphthalate and polybutylene naphthalate. However, its complex synthesis procedure and high production cost significantly reduce the use of 2,6-DMN. In this study, the synthesis of 2,6-DMN was investigated with methylation of 2-methylnaphthalene (2-MN) over metal-loaded beta zeolite catalysts including beta zeolite, Cu-impregnated beta zeolite and Zr-impregnated beta zeolite. The experiments were performed in a fixed-bed reactor at atmospheric pressure under a nitrogen atmosphere. The reactor was operated at a temperature range of 400-500°C and varying weight hourly space velocity between 1 and 3 h -1 . The results demonstrated that 2,6-DMN can be synthesized by methylation of 2-MN over beta type zeolite catalysts. Besides 2,6-DMN, the product stream also contained other DMN isomers such as 2,7-DMN, 1,3-DMN, 1,2-DMN and 2,3-DMN. The activity and selectivity of beta zeolite catalyst were remarkably enhanced by Zr impregnation, whereas Cu modification of beta zeolite catalyst had an insignificant effect on its selectivity. The highest conversion of 2-MN reached 81%, the highest ratio of 2,6-DMN/2,7-DMN reached 2.6 and the highest selectivity of 2,6-DMN was found to be 20% by using Zr-modified beta zeolite catalyst.

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“…The distillation residual yields of Zn loaded to HZSM-5 supports were higher than that HZSM-5 without Zn. This fact results in acid site on the catalysts promoted the chemical reaction such as cracking and deoxygenation during palm oil cracking led to conversion of triglyceride molecules to hydrocarbon based biofuel 16 . The coke yield produced with zinc loaded HZSM-5 catalysts was higher than that HZSM-5 without zinc load catalyst.…”

Section: Feedstock and Catalyst Characterizationmentioning

confidence: 99%

Liquid Biofuel Production from Palm Oil Using Dual-Function of Zn/HZSM-5 Catalyst

Sangdara¹,

Subsadsana²,

Ruangviriyachai³

2017

Orient. J. Chem

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To produce high yield and quality hydrocarbon biofuel, HZSM-5 zeolite loaded with different Zn concentrations (5, 10, 15 and 20wt.%) was used to palm oil cracking in batch reactor. Reaction temperature and reaction time were optimized. The products contained liquid hydrocarbon biofuel, distillation residual and coke. The physical properties of biofuel products were determined. The results presented that 15% Zn/HZSM-5 exhibited higher hydrocarbon biofuel yield (20.27%) and their excellent product properties with higher heating value (HHV), low viscosity and moisture content. A highest hydrocarbon biofuel yield and good alkane range hydrocarbons distribution from palm oil were obtained under reaction temperature of 420°C for 5 hours.

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Effect of bimetallic NiW modified crystalline ZSM‐5 zeolite on catalytic conversion of crude palm oil and identification of biofuel products

Cited by 12 publications

References 27 publications

Enhanced Isopropyl Alcohol Conversion over Acidic Nickel Phosphate-Supported Zeolite Catalysts

Enhanced Isopropyl Alcohol Conversion over Acidic Nickel Phosphate-Supported Zeolite Catalysts

Catalytic performance of Cu- and Zr-modified beta zeolite catalysts in the methylation of 2-methylnaphthalene

Liquid Biofuel Production from Palm Oil Using Dual-Function of Zn/HZSM-5 Catalyst

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