Influence of acid sites on the hydrodeoxygenation of anisole with metal supported on SBA-15 and SAPO-11

Hewer, Thiago L.R.; Souza, Adriana G.F.; Roseno, Karina T.C.; Moreira, Paulo F.; Bonfim, Rodrigo de Paiva Floro; Alves, Rita M.B.; Schmal, Martín

doi:10.1016/j.renene.2017.12.044

Cited by 54 publications

(40 citation statements)

References 41 publications

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“…Therefore, it is suggested that the co-impregnation of Ni and Co on HY decreases the total acid site amount of HY catalyst; however, this co-impregnation leads to an increase of L/B ratio. The L/B ratio is an important parameter since the composition of Lewis and Brønsted acid sites on the catalysts has a significant role in the cracking process, as reported by several researchers (Rogers and Zheng 2016;Hewer et al 2018;Istadi et al 2020). It was reported that the component distribution of the product from palm oil cracking depended mainly on the distribution of Lewis and Brønsted acid sites (L/B ratio) (Istadi et al 2020).…”

Section: Pyridine-probed Fourier-transform Infrared Spectroscopy (Py-mentioning

confidence: 99%

Biofuels Production from Catalytic Cracking of Palm Oil Using Modified HY Zeolite Catalysts over A Continuous Fixed Bed Catalytic Reactor

Istadi

Riyanto

Buchori

et al. 2020

Int. J. Renew. Energy Dev.

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The increase in energy demand led to the challenging of alternative fuel development. Biofuels from palm oil through catalytic cracking appear as a promising alternative fuel. In this study, biofuel was produced from palm oil through catalytic cracking using the modified HY zeolite catalysts. The Ni and Co metals were impregnated on the HY catalyst through the wet-impregnation method. The catalysts were characterized using X-ray fluorescence, X-ray diffraction, Brunauer–Emmett–Teller (BET), Pyridine-probed Fourier-transform infrared (FTIR) spectroscopy, and Scanning Electron Microscopy (SEM) methods. The biofuels product obtained was analyzed using a gas chromatography-mass spectrometry (GC-MS) method to determine its composition. The metal impregnation on the HY catalyst could modify the acid site composition (Lewis and Brønsted acid sites), which had significant roles in the palm oil cracking to biofuels. Ni impregnation on HY zeolite led to the high cracking activity, while the Co impregnation led to the high deoxygenation activity. Interestingly, the co-impregnation of Ni and Co on HY catalyst could increase the catalyst activity in cracking and deoxygenation reactions. The yield of biofuels could be increased from 37.32% to 40.00% by using the modified HY catalyst. Furthermore, the selectivity of gasoline could be achieved up to 11.79%. The Ni and Co metals impregnation on HY zeolite has a promising result on both the cracking and deoxygenation process of palm oil to biofuels due to the role of each metal. This finding is valuable for further catalyst development, especially on bifunctional catalyst development for palm oil conversion to biofuels.

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Section: Pyridine-probed Fourier-transform Infrared Spectroscopy (Py-mentioning

confidence: 99%

Biofuels Production from Catalytic Cracking of Palm Oil Using Modified HY Zeolite Catalysts over A Continuous Fixed Bed Catalytic Reactor

Istadi

Riyanto

Buchori

et al. 2020

Int. J. Renew. Energy Dev.

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“…For NiMo/SBA-15spent catalysts it was 18.8 nm, Table 3. This value is greater than the mean pore sizes of the SBA-15 support, around 8.77nm, as observed by TEM analyses [17], which suggests that most carbon was deposited on the surface and blocked most of the pores of the support. In fact, it decreased the surface area of the NiMo/SBA-15 after reaction, and provoked high deactivation due to the carbon deposition.…”

Section: Raman Spectroscopy Analysesmentioning

confidence: 59%

“…The surface area was determined by BET technique and the pore distribution obtained by the BJH method [19,20]. Complete characterization of these materials were reported elsewhere [17].…”

Section: Characterizationsmentioning

confidence: 99%

“…Recently, Hewer et al [17] studied nickel and molybdenum nanoparticles on silicon aluminum phosphate (SAPO-11) and mesoporous silica (SBA-15), respectively, and compared with γ-Al 2 O 3 support. These catalysts exhibited excellent catalytic activity for hydrodeoxygenation (HDO) of anisole and the hydrodeoxygenation and hydro-dearomatization reactions are strongly affected by the support nature due to the Brönsted and Lewis acid sites [17].…”

Section: Introductionmentioning

confidence: 99%

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Identification of compounds adsorbed and deposited on the Ni-Mo catalysts surface of alumina and SBA-15 by DRIFTS, Raman and TPO Analyses before and after Guaiacol hydrodeoxygenation.

Lima

Hewer

Alves

et al. 2021

Preprint

Self Cite

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We studied and identified compounds adsorbed or deposited on the catalysts surface of the Ni-Mo supported on alumina and SBA-15, before and after hydrodeoxigenation of a bio-oil model (guaiacol). Marked differences were observed on both catalysts through DRIFTS and Raman spectroscopy showing that the alumina-supported catalyst contains deposits of aromatic and oxygenated organic substances, while the carbon deposits on the SBA-15 as aliphatic simple molecules. TPO analyses confirm that the carbon deposited on the NiMo/SBA-15 catalyst were light polymer types, mainly nanotubes and nano fibers, while on the alumina catalyst the mainly carbon species formed were graphite type and heavier carbons. Post reaction analysis of the catalysts showed coke formation and carbon deposition rate of 1.14 mgcoke.gcat−1 h− 1 for NiMo/SBA-15 and the deactivation was 44 % higher for the NiMo/Al2O3 with 1.65 mgcoke.gcat−1 h− 1of carbon deposition rate.

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“…Wherein, SAPO-11 with the moderate acid strength and shape selectivity is a preferred candidate as catalyst support for deoxygenation and isomerization. 24,43 Moreover, its high surface area is expected to enhance Ni dispersion, giving suitable activity and coking-resistance of the supported Ni-based catalysts. [44][45][46] As stated above, bimetallic Ni-Co/SAPO-11 catalysts with features of bifunctional sites, that is, one metal site for HDO and the other acid sites for isomerization, have great potential for FAMEs upgrading.…”

Section: Introductionmentioning

confidence: 99%

Hydrodeoxygenation of fatty acid methyl esters and simultaneous products isomerization over bimetallic Ni‐Co / SAPO ‐11 catalysts

et al. 2021

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Bimetallic Ni-Co/SAPO-11 catalysts were prepared and investigated for hydrodeoxygenation (HDO) of fatty acid methyl esters (FAMEs) and sequential isomerization of the products in a continuous fixed-bed reactor. The physicochemical properties of the catalysts were characterized by means of N 2 adsorption-desorption, temperature-programmed reduction of H 2 , temperature-programmed desorption of NH 3 , infrared spectra of adsorbed pyridine, and thermogravimetry. The conversion of FAMEs and selectivity of C 15-18 are enhanced over the bimetallic Ni-Co/SAPO-11 catalysts compared with that of the corresponding monometallic counterparts, which is attributed to the modification effect by Co species. The balance between metal Ni and Co and the acidity of the support plays an important role in the catalytic performance. The Ni-Co/SAPO-11 catalysts with composition of 3% Ni and 6% Co exhibit optimal catalytic performance, specifically the conversion of FAMEs, selectivity of C 15-18 , and isomerization ratio of C 15-18 , respectively, reaching 100.0%, 93.0%, and 36.1% at 400 C and 1

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Influence of acid sites on the hydrodeoxygenation of anisole with metal supported on SBA-15 and SAPO-11

Cited by 54 publications

References 41 publications

Biofuels Production from Catalytic Cracking of Palm Oil Using Modified HY Zeolite Catalysts over A Continuous Fixed Bed Catalytic Reactor

Biofuels Production from Catalytic Cracking of Palm Oil Using Modified HY Zeolite Catalysts over A Continuous Fixed Bed Catalytic Reactor

Identification of compounds adsorbed and deposited on the Ni-Mo catalysts surface of alumina and SBA-15 by DRIFTS, Raman and TPO Analyses before and after Guaiacol hydrodeoxygenation.

Hydrodeoxygenation of fatty acid methyl esters and simultaneous products isomerization over bimetallic Ni‐Co / SAPO ‐11 catalysts

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