Skip to main content

Posts

Direct Generation and Kinetic Studies of High-Valent Transition Metal-Oxo Derivatives Through Photochemical Approaches_Crimson Publishers

Direct Generation and Kinetic Studies of High-Valent Transition Metal-Oxo Derivatives Through Photochemical Approaches by Rui Zhang in Progress in Petrochemical Science Abstract: High-valent transition metal-oxo complexes exhibit a wide range of reactivities and play essential roles as active Oxygen Atom Transfer (OAT) species in many chemical and biological oxidation processes. However, the detection and characterization of these intermediates are still challenging in view of their high reactivity and short lifetimes and their transient nature makes their study complex. This review highlights recent advancements in how photochemical reactions with visible light have emerged as promising approaches to generate and study high-valent transition metal-oxo species with different metals on various macrocyclic ligands. Investigating the reactivity of photo-induced high-valent metal-oxo species through practical kinetic studies has offered valuable insights into the structure-function relatio...
Post a Comment
Read more
Recent posts

Production of High Purity Lignin from OPEFB: An Overview_Crimson Publishers

Production of High Purity Lignin from OPEFB: An Overview by Jofry Othman in Progress in Petrochemical Science Abstract: This study examines the practicable method of lignin delignification and fractionation from Oil Palm Empty Fruit Bunches (OPEFB) to produce high purity products. A review on the current literature progress in this field indicated two development phases that involves several early studies on lignin delignification and lignin product purification and the later phase provides initial attempts to improve lignin recovery efficiency and overcome technical barriers for obtaining high purity lignin. It is found that there are significant gaps in understanding to achieve efficient removal of lignin, good recovery of lignin from high purity products and the removal of silica residuals on OPEFB surfaces. Accordingly, the high technical barriers to achieve high-purity lignin products are identified, including the need for an improved method to delignify and fractionate lignin for...
Post a Comment
Read more

Process Modelling and Simulation of Reactive Distillation for the Synthesis of High Purity Mono Ethylene Glycol_Crimson Publishers

Process Modelling and Simulation of Reactive Distillation for the Synthesis of High Purity Mono Ethylene Glycol by Jofry Othman in Progress in Petrochemical Science Abstract: This study developed a suitable process modelling technique and simulation model for the non-catalytic synthesis of high purity Mono Ethylene Glycol (MEG) using the Reactive Distillation (RD) process. The feasibility of the RD process is demonstrated for performing the glycol reaction, dewatering and separation indistinguishable from the existing MEG production process with added advantages. Notably, a high purity MEG product of 99.8% is achieved within a single RD column configuration that avoids the need for the make-up of fresh demineralized water as in the current process. A working RD process model is generated that uses the established kinetics model parameters for MEG synthesis in combination with the equilibrium model and thermodynamic parameters in Aspen Plus® software. This included the power-law reactio...
Post a Comment
Read more

Research Progress on Modification of Hydroxypropyl Cellulose_Crimson Publishers

Research Progress on Modification of Hydroxypropyl Cellulose by Haixue Kuang in Progress in Petrochemical Science Abstract: Hydroxypropyl cellulose, a semi-synthetic organic compound, is classified into high substitution and low substitution variants. Both display distinct physical and chemical traits, making them prevalent in a plethora of industries, including the pharmaceutical, daily chemical, construction, food and many others. For most efficient use of hydroxypropyl cellulose, it is crucial to comprehend and enhance its properties. For this reason, research in the field of hydroxypropyl cellulose modification has become a focal point. This paper provides a comprehensive review of the modification methods of hydroxypropyl cellulose and presents the current state of research in the field of hydroxypropyl cellulose modification, which has important reference value for practical application. https://crimsonpublishers.com/pps/fulltext/PPS.000638.php For more articles in  Progress ...
Post a Comment
Read more

Transforming Naphtha Steam Crackers for Plastic Waste and Biogenic Feedstocks_Crimson Publishers

Transforming Naphtha Steam Crackers for Plastic Waste and Biogenic Feedstocks by Henrik Thunman in Progress in Petrochemical Science Abstract: In an era where sustainability and profitability are crucial, conventional naphtha steam crackers are increasingly challenged by competing processes and stringent environmental regulations. A pioneering approach from Chalmers University of Technology in Sweden presents a promising solution. This innovative method also addresses the inefficiencies of current plastic recycling methods and paves the way for the transition toward a circular economy. The rise of low-cost alternative feedstocks like ethane and LPG, combined with advanced processes like CATOFIN® PDH that offer high selectivity for olefins directly from alkanes, has led to an oversupply of olefins in the petrochemical market. Additionally, the increasing costs associated with fossil CO2 emissions make naphtha steam crackers less competitive than alternative olefin production methods, wh...
Post a Comment
Read more

Study on the Alkylation of Benzene and Long-Chain Olefin under Trifluoromethane Sulfonic Acid Catalyst_Crimson Publishers

Study on the Alkylation of Benzene and Long-Chain Olefin under Trifluoromethane Sulfonic Acid Catalyst by Yanzhen Wang in Progress in Petrochemical Science Abstract: Using trifluoromethane sulfonic acid as catalyst for alkylation of benzene with long chain olefin process were studied. In the self-made alkylation unit, the effects of catalyst dosage, reaction time, reactant volume ratio and reaction temperature on the products were investigated. The results indicate that under the condition of 1v% catalyst dosage, 80 ℃, 20min and the volume ratio of benzene and 1-decene is 8, the conversion of 1-Decene can reach 100%, and the selectivity of 2-LAB is 42.29%. Otherwise, the content of heavy alkylbenzene is small. Washing by water can separate the catalyst from reaction system easily. https://crimsonpublishers.com/pps/fulltext/PPS.000646.php For more articles in  Progress in Petrochemical Science , please click on below link:  https://crimsonpublishers.com/pps/
Post a Comment
Read more