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Bulletin of Chemical Reaction Engineering & Catalysis
Published by Masyarakat Katalis Indonesia - Indonesian Catalyst Society
ISSN : -     EISSN : 19782993     DOI : https://doi.org/10.9767/bcrec
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Bulletin of Chemical Reaction Engineering & Catalysis, a reputable international journal, provides a forum for publishing the novel technologies related to the catalyst, catalysis, chemical reactor, kinetics, and chemical reaction engineering. Scientific articles dealing with the following topics in chemical reaction engineering, catalysis science, and engineering, catalyst preparation method and characterization, novel innovation of chemical reactor, kinetic studies, etc. are particularly welcome. However, articles concerned on the general chemical engineering process are not covered and out of the scope of this journal. This journal encompasses Original Research Articles, Review Articles (only selected/invited authors), and Short Communications, including: fundamentals of catalyst and catalysis; materials and nano-materials for catalyst; chemistry of catalyst and catalysis; surface chemistry of catalyst; applied catalysis; applied bio-catalysis; applied chemical reaction engineering; catalyst regeneration; catalyst deactivation; photocatalyst and photocatalysis; electrocatalysis for fuel cell application; applied bio-reactor; membrane bioreactor; fundamentals of chemical reaction engineering; kinetics studies of chemical reaction engineering; chemical reactor design (not process parameter optimization); enzymatic catalytic reaction (not process parameter optimization); kinetic studies of enzymatic reaction (not process parameter optimization); the industrial practice of catalyst; the industrial practice of chemical reactor engineering; application of plasma technology in catalysis and chemical reactor; and advanced technology for chemical reactors design. However, articles concerned about the "General Chemical Engineering Process" are not covered and out of the scope of this journal.
Arjuna Subject : Teknik Kimia (semua kategori) - Katalisis
Articles 847 Documents
 81   82   83   84   85 
Textural Properties and Surface Chemistry of Rice Husk–Derived Biochar and Bio-silica Supports in Ni-Catalyzed Oleic Acid Deoxygenation Mahene, Wilson Leonidas; Machunda, Revocatus Lazaro; Buckman, Tom A.; Salifu, Ali Azeko; Kivevele, Thomas
Bulletin of Chemical Reaction Engineering & Catalysis 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20690

Abstract

Rice husk (RH), an abundant agricultural residue, is a promising precursor for the production of carbon- and silica-based catalyst supports for upgrading lipid feedstocks. Previous studies have shown that RH-derived biochar and biosilica can serve as effective catalyst supports in reactions involving relatively small molecules; however, their application in the deoxygenation of lipid-derived molecules remains largely unexplored. In this study, RH was converted into three distinct supports, desilicated biochar (RH-C), KOH-activated desilicated biochar (RH-AC), and biosilica (RH-SiO₂), which were systematically compared as supports for Ni catalysts in the solvent-free deoxygenation of oleic acid. The supports and catalysts were characterized by BET, TEM, XRD, XPS, and TGA. Ni/RH-AC exhibited the highest surface area (809.8 m2 g-1) but lower mesopore volume than Ni-RH-C, while Ni/RH-SiO2 showed moderate surface area and minimal microporosity. XPS revealed minimal electronic perturbation of Ni supported on biochar, whereas biosilica induced electron withdrawal. All catalysts predominantly followed the decarboxylation/decarbonylation (deCOx) pathway, although Ni/RH-SiO2 also exhibited noticeable hydrodeoxygenation (HDO). Ni/RH-C achieved the highest conversion (96%), while Ni/RH-AC and Ni/RH-SiO2 achieved 76% and 72%, respectively. TGA/DSC analysis showed greater carbonaceous material deposition on Ni/RH-AC than on Ni/RH-C, with Ni/RH-SiO2 exhibiting the lowest coking. These findings reveal a clear structure-property-performance relationship, revealing that desilicated rice-husk biochar provides higher catalytic activity, whereas biosilica offers greater stability and lower susceptibility to coking. Moreover, excessive chemical activation after desilication appears unnecessary and may even be detrimental.
Influence of Ni/CeO2 on Pyrolytic Conversion of FOBS to Hydrogen Formation Wan Ranizang, Wan Nur Anis Amira; Jusoh, Mazura; Asmadi, Mohd; Zakaria, Zaki Yamani
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 3 Year 2026 (October 2026) (Issue in Progress)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20677

Abstract

Fuel Oil Blended Stock (FOBS) is a residual byproduct from petroleum refineries that is often underutilized and may cause storage and environmental issues. Converting FOBS into hydrogen through catalytic pyrolysis offers a sustainable waste valorisation pathway; however, no studies have focused on Ni/CeO2 catalysts for hydrogen production from FOBS, which establishes the novelty of this work. This study aims to evaluate the performance of a Ni/CeO2 catalyst for hydrogen production from FOBS via catalytic pyrolysis. A 3% Ni/CeO2 catalyst was synthesized using the wet impregnation method and characterized using XRD, FESEM, BET, and FTIR. Catalytic pyrolysis experiments were conducted in a tubular furnace reactor at temperatures between 400-600 °C, nitrogen flow rates of 40-140 mL/min, and catalyst-to-feedstock ratios of 1:5, 1:10, and 1:15. The gaseous products were analyzed using GC-TCD/FID. The results showed that higher temperatures and catalyst-to-feedstock ratios improved FOBS conversion and hydrogen selectivity, with optimal performance achieved at 600 °C, 90 mL/min, and a catalyst-to-feedstock ratio of 1:15, yielding high conversion, gas yield, and hydrogen selectivity. In conclusion, the Ni/CeO2 catalyst shows strong potential for converting FOBS into hydrogen-rich gas, supporting waste valorisation and sustainable hydrogen production. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Facile Fabrication of Alginate–BiBDC Composite Beads for Efficient Removal of Methylene Blue from Aqueous Solutions Thanh, Nguyen Duy; Thi, Nguyen Truong; Nguyen, Van Cuong; Pham, Hoang Ai Le
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 3 Year 2026 (October 2026) (Issue in Progress)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20680

Abstract

Alginate–BiBDC composite beads were produced using Ca²⁺-mediated ionic crosslinking and assessed for methylene blue (MB) adsorption. FT-IR, XRD, SEM, BET, and TGA validated the effective incorporation of BiBDC and the creation of a porous hybrid network. Among the composites, ALG@BiBDC-2 exhibited the most advantageous textural characteristics (14.16 m².g⁻¹ surface area, 0.0324 cm³.g⁻¹ pore volume, 16.27 nm pore size), attaining 85.33% methylene blue removal within 60 min. Adsorption was significantly influenced by pH, dose, concentration, and temperature. At a pHPZC of 6.76, electrostatic attraction predominates in the uptake of MB. The adsorption process followed a pseudo-second-order model and a Langmuir isotherm, indicating chemisorption-driven monolayer adsorption. Thermodynamic analysis validated spontaneous and exothermic characteristics. The beads maintained over 60% effectiveness after four cycles, indicating moderate stability and significant promise for treating dye-contaminated wastewater. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Improvements in Photocatalytic Activity in Visible Light Destruction of Chlorpyrifos in a Batch Reactor Applying the Z-Scheme g-C3N4/Fe3O4/CuWO4/CuO Heterojunction, Including Fabrication, Characterization, and Recycling Ali, Shno M.; Alwared, Abeer I.
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 3 Year 2026 (October 2026) (Issue in Progress)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20698

Abstract

The most widely used pesticide in agricultural regions across the entire globe is chlorpyrifos (CPF).In the present research, g-C3N4/Fe3O4/CuWO4/CuO heterojunction has been created through a series of straightforward technologies and used for photocatalytic degradation of chlorpyrifos .The produced g-C3N4/Fe3O4/CuWO4/CuO nanocomposites' optical and magnetic features, structure, and morphologies have been investigated using XRD, FTIR, elemental mapping, EDS, SEM, TEM, VSM, DRS, PL, and BET methodologies. With rate constants of 0.00507 and 0.00696 min-1, correspondingly, the photocatalyst enabled the photocatalytic degradation of chlorpyrifos, g-C3N4, and CuWO4, which achieved maximal efficiencies of 50% and 69% in visible light. However, under visible light, g-C3N4/Fe3O4/CuWO4/CuO exhibited a maximum performance of 93% with rate constants of 0.0159 min-1. In order to remove chlorpyrifos from aqueous solution, this work created a unique type of g-C3N4/Fe3O4/CuWO4/CuO nanocomposite utilizing a multistage procedure using a photocatalytic technique employing novel catalysts. Being exposed to visible light, the as-fabricated g-C3N4/Fe3O4/CuWO4/CuO substantially enhanced the photocatalytic activity for the successful elimination of pesticide, boosting its potential for use in ecologically friendly water purification systems. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Apparent Reaction Kinetics of Crude Palm Oil Dechlorination Using Sodium Silicate Solution Hari, Zulfa Kurnia Umani; Rasad, Nur Shafikah; Mahmud, Mohd Sabri
Bulletin of Chemical Reaction Engineering & Catalysis 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20687

Abstract

This paper reports a study of the apparent reaction kinetics of crude palm oil (CPO) dechlorination using a sodium silicate (SS) solution, providing a water-efficient alternative to conventional washing to mitigate the 3-MCPD precursor. Three CPO-to-SS volume ratios (0.25, 2.33, and 3.00) were tested across temperatures of 60°C, 70°C, and 80°C. The results showed the 2.33 ratio as most effective, achieving 1000 times of extraction, as indicated by the McCabe-Thiele equilibrium plot. Kinetic analysis revealed a transition from pseudo-first-order regimes at lower temperatures to exceptionally high apparent reaction orders (up to 24.90) at 80°C. These high orders indicate a mass-transfer limited process where declining SS concentration might have destabilized the emulsion, making the reaction rate sensitive to interfacial surface area. The FTIR spectra confirmed that SS acted as both a buffering agent and a dispersant, reducing moisture retention without clear free fatty acid neutralization. The elevated temperatures significantly enhanced dechlorination rates, with the 0.25 ratio facilitating chloride breakdown with the highest rate constant. The results revealed that the kinetic rate is  with the rate constant, k (range 3.6 x 10-3 until 1x10 -111) and the apparent order,  (range up to 24.9) at 80ºC. These findings conclude that SS can effectively reduce chlorine content in CPO, and that process is strongly governed by the phase volume ratio and operating temperature.
Tailoring the Structural Evolution of Co-Supported Fibrous ZSM-5 via Hydrothermal Aging for Syngas Production in Ethanol Dry Reforming Hanafi, Nor Shuhada Solehah; Ideris, Asmida; Rahayu, Aster; Setyawan, Martomo; Aktawan, Agus; Setiabudi, Herma Dina; Ainirazali, Nurul
Bulletin of Chemical Reaction Engineering & Catalysis 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20686

Abstract

The catalytic dry reforming of ethanol (EDR) offers a promising approach to reduce CO2 emissions and support the less carbon-intensive processes. This study examined the effect of cobalt (Co) loading on fibrous ZSM-5 (FZSM-5), which was synthesized at hydrothermal aging times of 6, 8, and 10 h, for EDR. The catalytic evaluation was carried out at 650 °C, 1 bar, and 30,000 mL g-1 h-1 for 8 h. The results showed that hydrothermal aging time influenced the catalyst properties and catalytic performance. The catalyst aged for 8 h developed a distinct dendritic structure, a surface area of 208.9 m2 g-1, and distributed hierarchical porosity. During EDR, the 8h Co/FZSM-5 catalyst sustained stable ethanol conversion and produced a favorable H2/CO ratio of 1.55. By contrast, the 6h catalyst showed low crystallinity, while the 10h catalyst underwent extended crystal growth that limited mass transfer. TGA results further showed that the 8h catalyst limited carbon deposition more effectively and exhibited less deactivation better than the other samples. These findings provide practical guidance for catalyst design and support the development of more resource-efficient reforming processes.
Role of Ni and Zn Dopants in Modulating the Structure and Photocatalytic Activity of Mesoporous Silica–Cu Catalysts for Methylene Blue Degradation Ulfa, Maria; Lestari, Suwiji
Bulletin of Chemical Reaction Engineering & Catalysis 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20679

Abstract

This study investigates the structural and photocatalytic roles of Ni and Zn dopants in mesoporous silica–Cu catalysts for methylene blue degradation under light irradiation. The materials were synthesized and systematically characterized using FTIR, XRD, BET, SEM–EDS, and UV–DRS to elucidate dopant-dependent structural, textural, and electronic modifications. XRD analysis revealed that Zn doping enhances crystallinity to 90.80% with a crystallite size of 1.97 nm, whereas Ni doping produces lower crystallinity (80.69%) and smaller crystallites (1.82 nm), indicating defect-rich microstructures. BET analysis confirmed mesoporous characteristics in both systems, with Zn incorporation generating broader pore distributions and higher adsorption capacity, while Ni induces more confined pore structures. SEM results showed average particle sizes of 1.49 nm for Zn-doped and 1.67 nm for Ni-doped catalysts. UV–DRS measurements demonstrated pronounced electronic modulation, with Ni doping significantly narrowing the band gap to 1.02–1.11 eV compared with 2.08–2.78 eV for Zn-doped materials. Photocatalytic evaluation at an initial methylene blue concentration of 10 ppm showed superior performance for the Ni-doped catalyst, achieving 79.59% removal efficiency and an adsorption capacity of 19.89 mg g⁻¹, compared with 50.98% removal and 12.74 mg g⁻¹ for the Zn-doped system. Kinetic analysis followed pseudo-first-order behavior, with a higher rate constant for Ni doping (0.01675 min⁻¹) than Zn doping (0.00706 min⁻¹). These findings demonstrate that Ni primarily enhances photocatalytic activity through electronic defect formation and band gap narrowing, while Zn mainly improves structural ordering and pore accessibility. The study highlights the critical role of dopant selection in tailoring structure–activity relationships in mesoporous silica–Cu photocatalysts.

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