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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 885 Documents
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Comparative Evaluation of Pristine and Banana Peel Biochar-Supported Layered Double Hydroxide in Alkali-Free Conversion of Waste Cooking Oil to Biodiesel Elyza Hany Effendy; Noraini Hamzah; Nazrizawati Ahmad Tajuddin
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.20878

Abstract

Layered double hydroxides (LDHs) are promising heterogeneous base catalyst for transesterification of various feedstock oils into biodiesel due to their tunable structure and favorable catalytic properties. Besides, LDHs contribute to environmental sustainability due to their ease of separation and ability to be reused for multiple catalytic cycles.  However, LDHs often suffer from mass transfer limitations and particle aggregation, which reduces the accessibility of active sites and reduces catalytic efficiency. Biochar was introduced as a support material in LDH to investigate the influence of it on the catalyst properties and catalytic performance in transesterification. In this study, MnAl LDHs supported with banana peel biochar (MnAl/BPB) were synthesized using an alkali-free co-precipitation method with different MnAl ratios (i.e., 2:1, 3:1, and 4:1). The synthesized LDH were calcined to produce corresponding layered double oxides (LDOs) for catalytic evaluation in transesterification of waste cooking oil. The alkali-free synthesis approach was employed as a greener alternative to conventional methods, while ensuring higher purity and more consistent catalytic performance of LDHs. Among  the synthesized catalysts, Mn4Al demonstrated the optimum physiochemical properties and was therefore selected for the transesterification process. Mn4Al-LDO showed excellent catalytic performance at optimum parameter of 21:1 methanol:oil ratio, 3 wt% catalyst, and 65℃ for 2 hours, achieving a fatty acid methyl ester (FAME) yield of 99.63%. In contrast,  under the same parameter, Mn4Al/BPB-LDO exhibited lower FAME yield (68.46%) demonstrating that biochar did not enhance unsupported catalysts. Pristine Mn4Al-LDO also exhibited good stability, maintaining effective catalytic activity for up to five reuse cycles.
Box-Behnken Design Optimization of Eco-Friendly Walnut Shell-Derived Activated Carbon for Enhanced Paracetamol Adsorption Mariem Ouled Mohamed; Leila Khalfa; Noureddine Hamdi; Walid Maherzi; Mohamed Bagane
Bulletin of Chemical Reaction Engineering & Catalysis 2027: BCREC Volume 22 Issue 1 Year 2027 (April 2027) (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.20857

Abstract

In this work, a low-cost activated carbon derived from walnut shells (WSAC) was developed through pyrolysis coupled with chemical activation using ZnCl₂. The preparation process was statistically optimized using the Box–Behnken design (BBD) to assess the influence of impregnation ratio, carbonization time, and carbonization temperature on the textural properties of the material. The optimal conditions, predicted by Design Expert, corresponded to a carbonization temperature of 450 °C, a carbonization time of 90 min, and an impregnation ratio of 1:1 (w/w). Under these conditions, the WSAC achieved a high specific surface area of 873 m²/g and a total pore volume of 0.490 cm³/g, indicating a predominantly mesoporous structure. The physico-chemical properties of WSAC, including thermogravimetric analysis, crystalline structure, morphology, functional groups, and surface area, were investigated using various techniques such as TGA-DTG, SEM, XRD, FTIR, pHZPC, and BET analysis. The adsorption behavior of paracetamol (PCT) from aqueous solution was systematically evaluated as a model pharmaceutical contaminant. The effects of solution pH, temperature, initial concentration, and adsorbent dosage were investigated. The adsorption data were best described by the Langmuir isotherm, with a maximum monolayer adsorption capacity of 62.06 mg.g-1, while the kinetic results followed a pseudo-second-order model (R2 = 0.999). It was found that the adsorption mechanism involves hydrogen bonding and phi–phi interactions. Thermodynamic parameters revealed that the adsorption process is spontaneous and exothermic. These results show that WSACs can be an efficient adsorbent for the removal of PCT or other pharmaceutical pollutants from water. Copyright © 2027 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).
Skeletal Isomerisation of Methyl Oleate Using Zeolite‑β: Catalyst Activity and Conversion Assessment Adeel Anwar; Arthur Garforth; Ashraf Muhammad; Muhammad Fahad Saeed; Hyder Ali
Bulletin of Chemical Reaction Engineering & Catalysis 2027: BCREC Volume 22 Issue 1 Year 2027 (April 2027) (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.20768

Abstract

Biodiesel’s cold flow properties, limited by the crystallisation of saturated and trans‑unsaturated fatty acid methyl esters (FAMEs), can be improved through skeletal isomerisation of unsaturated FAMEs to branched‑chain isomers. Zeolite‑β has shown promise for this reaction, but detailed characterisation of the complex isomer mixture remains challenging. This study investigates the isomerisation of methyl oleate over Zeolite‑β (H‑β) in a batch reactor at 200 °C and atmospheric pressure for 6 h, using 10 wt% catalyst. A conversion of 92.2% was achieved, confirming high catalyst activity. However, analysis by gas chromatography–mass spectrometry (GC–MS) with a polar BPX70 column revealed significant limitations: the product chromatogram showed extensive peak overlap, and the mass spectra of positional, geometric, and branched‑chain isomers were nearly identical, preventing reliable determination of selectivity and yield. The work highlights that conventional GC–MS is inadequate for full isomer speciation in such complex mixtures. Advanced techniques such as comprehensive two‑dimensional GC (GC×GC), silver‑ion chromatography, or high‑resolution mass spectrometry are required for accurate isomer identification. These findings establish a performance baseline for Zeolite‑β and delineate the analytical challenges that must be addressed to enable rational catalyst and process optimisation for improved biodiesel cold flow properties. Copyright © 2027 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).
Cooperative Mn–Cu Catalysis for Oxygen-Coupled Oxidative Decarboxylation: Kinetic and Mechanistic Insights Setyo Yanus Sasongko; Tri Partono Adhi; I. G. B. Ngurah Makertihartha; Afif Syaifuddin; Dinda Nailla Amoryna
Bulletin of Chemical Reaction Engineering & Catalysis 2027: BCREC Volume 22 Issue 1 Year 2027 (April 2027) (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.20893

Abstract

Oxidative decarboxylation of fatty acids represents a promising hydrogen-free route for hydrocarbon production, yet catalytic systems operating under moderate aerobic conditions with kinetic and mechanistic validation remain limited. In this study, a biomimetic Mn–Cu catalytic system was evaluated for the oxidative decarboxylation of lauric acid at 110–150 °C under continuous air flow. Reaction performance was assessed through CO₂ evolution as a kinetically relevant indicator of carboxyl-group cleavage, enabling real-time evaluation of decarboxylation activity. The Mn–Cu system exhibited substantially higher catalytic activity than the corresponding monometallic Mn- and Cu-based systems, indicating cooperative interactions between the two metal components. Kinetic analysis showed that the reaction proceeded under an oxygen-coupled regime without an observable induction period. The initial CO₂ formation rate under air reached 0.1863 mmol min⁻¹, approximately 9.3 times higher than that under N₂, confirming the essential role of oxygen in sustaining catalytic turnover. Radical trapping experiments using butylated hydroxytoluene (BHT) resulted in concentration-dependent inhibition of CO₂ formation, reaching up to 73.3%, supporting the involvement of radical species in the decarboxylation pathway. GC–MS analysis confirmed hydrocarbon formation, with C11 compounds as the dominant fraction, consistent with lauric acid decarboxylation. A plausible Mn–Cu-assisted oxygen-coupled pathway is proposed, in which Cu contributes to oxygen activation while Mn facilitates carboxylate oxidation through electron-transfer processes. However, specific Cu–oxygen species, Mn oxidation states, and radical intermediates were not directly identified. Overall, these findings provide coherent kinetic and mechanistic evidence for Mn–Cu-assisted oxidative decarboxylation under moderate aerobic conditions. Copyright © 2027 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).
Biofuel Conversion from Waste Cooking Oil Using Ni-Cu Catalysts Supported on Mesoporous Silica Synthesized via Acidic CTAB-P123 Templating Ahmad Suseno; Kumala Nadiah Sholika; Yayuk Astuti
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.20842

Abstract

This study investigated the effect of acidic pH variations (pH 1, 3, and 6) on the synthesis of mesoporous silica as a support for Ni-Cu catalysts in the hydrocracking of waste cooking oil (WCO) into biofuel. The synthesis was conducted via reflux method using CTAB and Pluronic P123 as templates, followed by impregnation with 5% Ni-Cu metals at a 3:1 ratio. Gas sorption analysis (GSA) revealed that catalyst synthesized at pH 6 (K-6) achieved the highest surface area (413.44 m2/g) and total acidity (7.63 mmol/g). X-ray diffraction (XRD) confirmed amorphous silica structures with metallic Ni and Cu phases, while Fourier-transform infrared (FTIR) spectroscopy verified Brønsted and Lewis acid sites. Hydrocracking at  catalyst temperature and 500°C feed temperature (1:100 catalyst-to-feed ratio) was evaluated using gas chromatography–mass spectrometry (GC-MS). Catalyst K-6 demonstrated superior catalytic performance with 98.87% total conversion activity and 78.99% selectivity toward biofuel fraction. These findings highlight the significant potential of pH-optimized Ni-Cu/mesoporous silica catalysts for sustainable biofuel production from WCO. 

Page 89 of 89 | Total Record : 885

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