AKTIVITAS DAN SELEKTIVITAS KATALIS Mo-Co/USY PADA REAKSI HIDRODEOKSIGENASI ANISOL

Nugrahaningtyas, Khoirina Dwi; Hidayat, Yuniawan; Prayekti, Prima Susan

doi:10.21831/jps.v20i1.5609

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…Hydrodeoxygenation (HDO) is a promising process to remove oxygen that binds to hydrocarbons [3,4] through hydrodeoxygenation (removal of C-O), hydrogenation (saturation of C=O and aromatic rings), hydrogenolysis, and hydrocracking [5]. Moreover, HDO produces more stable hydrocarbons with higher energy content [6,7].…”

Section: Introductionmentioning

confidence: 99%

The Stabilization of Liquid Smoke through Hydrodeoxygenation Over Nickel Catalyst Loaded on Sarulla Natural Zeolite

et al. 2020

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Constituents of liquid smoke possess a huge potential to be converted as value-added chemicals, such as flavoring, antiseptics, antioxidants, or even fossil oil substitutes. However, liquid smoke instability, led by the presence of oxygenate compounds, is an obstacle for further utilization and processing. On the other hand, catalyst efficiency in hydrodeoxygenation (HDO) remains challenging. Sarulla natural zeolite (Z), with abundant availability, has not been comprehensively investigated in the catalytic performance of HDO. In this study, Sarulla natural zeolite with different Si/Al ratios, which are activated by several concentrations of hydrochloric acid and nickel supported by Z (Ni-Z) synthesized by wet impregnation, were evaluated for HDO of liquid smoke, particularly in reducing oxygenate compounds. Catalyst morphology, surface area, pores, and crystallinity are investigated. Catalytic performances were evaluated, particularly on reducing oxygenate compounds and the shifting of phenol and its derivatives. Furthermore, the liquid smoke product of HDO was analyzed by gas chromatography-mass spectrometry (GC-MS). The data obtained reveal that the HDO process of liquid smoke with the Z3 catalyst shows the best activity compared to Z5 and Z7, with phenol conversion of 62.39% and 11.93% of alkoxy reduction. Meanwhile, the best Ni metal catalyst system activity was given by the Ni-Z5 catalyst compared to Ni-Z3 and Ni-Z7, where phenol conversion and alkoxy reduction were at 60.06% and 11.49%, respectively.

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Section: Introductionmentioning

confidence: 99%

The Stabilization of Liquid Smoke through Hydrodeoxygenation Over Nickel Catalyst Loaded on Sarulla Natural Zeolite

et al. 2020

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“…The Ni(H2PO4)2-SiO2 catalyst has the highest total acidity of the other three silica nickel phosphate catalysts at 8,275 mmol/g. This can be due to the presence of lewis acid sites from nickel metals and Bronsted acid sites from OHgroups based on H2PO4 and SiO from catalyst support, namely silica [12]. The most important thing that increases the acidity of the Ni(H2PO4)2-SiO2 catalyst is the number of Hydrogen atoms that are the site of the Bronsted acid [11].…”

Section: Adsorption Using Pyridine and Ammoniamentioning

confidence: 99%

Comparison of Acidity Test Method of Nickel Phosphate Silica Catalyst for Production Levulinic Acid from Glucose

Putri¹,

Hasanudin²,

Mara³

2022

IJFAC

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The reaction of levulinic acid production from glucose has a reaction stage that requires a high temperature and high activation energy so that in this levulinic acid production reaction a catalyst is needed. The required catalyst must have a lewis acid site and a bronsted acid site so that the acidity of the catalyst is very influential for the successful production of levulonic acid. Silica nickel phosphate catalysts have lewis acid sites from Ni metal and bronsted acid sites from phosphoric and silica groups. The acidity of the catalyst was measured using the pyridine and ammonia adsorption method and the acidity center strength method using the TGA-DTA base adsorption-desorption. The adsorption of ammonia and pyridine uses the gravimetric method so that it can easily obtain the amount of total acidity of the catalyst and the acidity of the catalyst surface while the TGA-DTA method shows the acid strength of the actual catalyst, which is the real state of the catalyst when catalyzing a reaction and shows the catalyst's resistance to high temperatures. These two methods of measuring acidity have the same disadvantage that they cannot show and know the number of lewis acid sites and bronsted acid sites.

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“…Keasaman zeolit dapat ditingkatkan dengan cara pengembanan (impregnasi) logamlogam transisi yang memiliki orbital d yang belum terisi penuh [11] seperti logam Mo sebagai situs aktif [12] dan Ni sebagai promotor yang menjadikan sifat keasaman katalis menjadi lebih besar lagi dibanding tanpa promotor [13].…”

Section: Pendahuluanunclassified

Preparasi dan Karakterisasi Katalis Mo-Ni/HZ dengan Metode Impregnasi untuk Cracking Katalitik Minyak Limbah Cair Pengolahan Kelapa Sawit menjadi Bahan Bakar Nabati

Lestari

Sundaryono

Elvia

2019

atp

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This study aims to determine the characteristics of Mo-Ni/HZ catalysts and test the ability of Mo-Ni/HZ catalysts in converting vegetable oils into biofuels through catalytic cracking reactions.Catalyst preparation is carried out by the impregnation method which begins with activation of natural zeolite.Impregnation is carried out by dissolution, reflux, filtration, drying and calcination.Catalyst characterization included the determination of the distribution of metals in zeolites using IR spectroscopic analysis and total acidity of the catalyst by ammonia adsorption gravimetric method.Preparation of samples prior to cracking is heating, degumming and bleaching.Catalytic cracking was carried out at 280oC using Mo-Ni/HZ catalyst for 100 minutes.The constituent components of the cracking results were analyzed by GC-MS and IR spectroscopy.The results obtained from the catalytic cracking process were then determined by physical characteristics which included density, viscosity, fog point and pour point test.Based on the shift of wave number in IR spectroscopy, it can be concluded that the Ni and Mo metals are embedded in the HZ.This Mo-Ni/HZ catalyst has total acidity of 8.39 mmol/gammonia.The results of the study prove that the Mo-Ni/HZ experiment proved to be able to crack oil frompalm oil processing wastewater by 91.46% to composition C=O ester CH aliphatic.The physical characteristics of cracking productshave parameters density of 0.93 g/cm3, a viscosity of 26.60 cSt, a fog point of 15oC and pour point of 11.67oC.

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AKTIVITAS DAN SELEKTIVITAS KATALIS Mo-Co/USY PADA REAKSI HIDRODEOKSIGENASI ANISOL

Cited by 6 publications

References 3 publications

The Stabilization of Liquid Smoke through Hydrodeoxygenation Over Nickel Catalyst Loaded on Sarulla Natural Zeolite

The Stabilization of Liquid Smoke through Hydrodeoxygenation Over Nickel Catalyst Loaded on Sarulla Natural Zeolite

Comparison of Acidity Test Method of Nickel Phosphate Silica Catalyst for Production Levulinic Acid from Glucose

Preparasi dan Karakterisasi Katalis Mo-Ni/HZ dengan Metode Impregnasi untuk Cracking Katalitik Minyak Limbah Cair Pengolahan Kelapa Sawit menjadi Bahan Bakar Nabati

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