Phosphotungstic acid and propylsulfonic acid bifunctionalized ordered mesoporous silica: A highly efficient and reusable catalysts for esterification of oleic acid

Z Yu, X Chen, Y Zhang, H Tu, P Pan, S Li, Y Han… - Chemical Engineering …, 2022 - Elsevier
In phosphotungstic acid aqueous solution, the ordered mesoporous silica molecular sieve
(HPW/OMS-SO 3 H) simultaneously functionalized by phosphotungstic acid (HPW) and …

HPW/MCM-41 catalytic Simmons-Smith cyclopropanation of olefins for synthesis of high-energy–density fuel

Y Liu, S Yang, C Shi, L Pan, X Zhang, JJ Zou - Chemical Engineering …, 2024 - Elsevier
Simmons-Smith cyclopropanation commonly promoted by CF 3 COOH is one important
method for transforming olefin into high-energy–density cyclopropyl fuel, but it brings …

Modification of polysulfone membranes using magnetite nanoparticles containing sulfonic acid and heteropoly acid groups to improve permeability and antifouling …

V Vatanpour, B Keskin, H Bakar, T Akca… - Separation and …, 2025 - Elsevier
To increase the performance of ultrafiltration membranes, it is necessary to develop new
materials. In this study, membrane production was carried out using magnetite nanoparticles …

Synthesis of Sm‐TADDbBP@ MCM‐41 as a Robust, Reusable, and Practical Nanocatalyst in the Homoselective [2+ 3] Cycloaddition Reaction

B Tahmasbi, P Moradi, F Mohammadi… - Applied …, 2025 - Wiley Online Library
Schiff‐base materials are known ligands for the coordination of metal ions and the synthesis
of various stable and useful complexes. Therefore, herein, a novel Schiff‐base compound …

Magnetic chitosan supported copper particles as a heterogeneous catalyst for benzaldehyde glycol acetal reaction

X Han, F Zhou, X Liu, W Zheng, Z Wang, S Yang… - International Journal of …, 2024 - Elsevier
In this work, a series of magnetic chitosan (CS) supported-metal catalysts were successfully
prepared for the acetalization of benzaldehyde (BzH) with ethylene glycol (EG). The …

Immobilization of phosphotungstic acid on the surface of chemically modified magnetite nanoparticles: An efficient heterogeneous acid catalyst for alcoholysis of …

MS Hosseini, M Masteri-Farahani - Colloids and Surfaces A …, 2024 - Elsevier
A new magnetically recoverable heterogeneous acid catalyst was easily synthesized by
electrostatic interaction of phosphotungstic acid (HPW) species with 3-aminopyridine (Ampy) …

Phosphotungstic acid and sulphonic acid functionalised SBA-15 for the synthesis of 2, 4, 5 trisubstituted and 1, 2, 4, 5 tetrasubstituted imidazole derivatives

R Arun, M Joseph, MP Athira, M Salva… - Journal of Porous …, 2025 - Springer
Over the past few decades, research has been consistently focused on the development of
simple green synthetic routes for organic transformations. Mesoporous silica based solid …

Chemoselective synthesis of acyclic acetals by natural kaolin under green chemistry conditions

M Boukachabia, H Bendjeffal… - …, 2022 - Wiley Online Library
The highly chemoselective protection of various aldehydes by natural kaolin as a catalyst
was reported. This clay was characterised by XRD, FTIR, BET and SEM techniques. The …