Contents

Petroleum Chemistry

Vol. 66, No. 4, 2026

REVIEW PAPER

Study on the Microemulsion Characterization (A Review)

Wenhua Zhao, Tianhan Xu, Yu Cao, Xianzhe Ke, Haonan Wang, Gaowen Wang, and Shuoshi Wang p. 367  abstract

Oxidative Desulfurization of Lighter Petroleum Fractions Using Supported Heteropoly-Acid Catalysts (A Review)

Ayat N. Mahmood, Bashir Y. Al-Zaidi, Zaidoon M. Shakor, Yasameen Mundher J., and Ali Al-Shathr p. 377  abstract

RESEARCH PAPER

Accumulation Trends of Thiophene Derivatives in the Cracking Products of Ozonated Sour Vacuum Gas Oils

Maria I. Merzhigot and Evgenii B. Krivtsov p. 396  abstract

Aromatic Hydrocarbons Geochemistry of Crude Oils from East Baghdad Oilfield, Central Iraq

Saja Sami Mohammed, Mohamed W. Alkhafaji, Sabbar Abd Allah Saleh, Alex Zumberge, and Mazin Nadhim Jasim p. 405  abstract

Thermocatalytic Decomposition of Methane over Ni-Based Catalysts for Hydrogen and Carbon Nanotube Synthesis: an Experimental and Theoretical Study

Igor V. Kudinov, Anton V. Eremin, Viktor D. Dolgikh, Yuriy A. Kryukov, Nikolay A. Vinogradov, Denis M. Davydov, Vladislav A. Novikov, Vladimir S. Pavelyev, Nishant Tripathi, and Andrey A. Pimenov p. 420  abstract

Allyl- and Propenyl-Substituted Nitrogen-Containing Aromatic Compounds as Antioxidants for Hydrocarbons

Musa R. Bayramov, Vagif M. Farzaliyev, Gunay M. Mehdiyeva, Irada A. Rzayeva, and Afsun R. Sujayev p. 435  abstract

Sustainable Synthesis and Multi-Objective Optimization of Carbon Nanotubes from Algerian Gas Condensate

Wissal Madaci, Souad Hammadou née Mesdour, Djamila Boufades, Abdelbaki Benamor, Said Samer, Taha Ibrahim Mohamed Assem, Mohamed Kentour, and Boudjema Hamada p. 443  abstract

Ethylene/Propylene Copolymerization and Ethylene/Propylene/5-Ethylidene-2-Norbornene Terpolymerization Using Half-Sandwich Titanium Complexes with α-Naphthoxide Ligands as Catalysts

Stanislav L. Saratovskikh, Igor V. Zharkov, Sergey A. Zhukov, Evgeny E. Faingol’d, Andrei N. Panin, Artur T. Kapasharov, Dmitriy A. Chernyayev, and Natalia M. Bravaya p. 464  abstract

Synthesis and Application of a Novel Water-Soluble Binary Polymer Viscosity Reducer for Heavy Oil Reservoirs

Xi Lu, Yong Hu, Lili Cao, Haibo Wang, and Jianfang Sun p. 477  abstract