Sulfonic acid-functionalized ordered nanoporous Na+-montmorillonite as an efficient, eco-benign, and water-tolerant nanoreactor for chemoselective oxathioacetalization of aldehydes

Abstract

Sulfonic acid-functionalized ordered nanoporous sodium montmorillonite has been found to be a mild and efficient solid acid catalyst for the chemoselective protection of a variety of carbonyl compounds as oxathiolanes in good to excellent yields. The present method offers several advantages such as short reaction times, high yields, simple procedure and mild conditions. Also, the catalyst could be recycled and reused at least for five times without noticeably decreasing the catalytic activity.

Organically Modified Montmorillonite as Nanoreactor to Improve the Grafting Degree of Maleic Anhydride onto Polypropylene

“…ere were two types of experiments: system 1 using the classical method: PP/DCP/MAH grafting system without o-MMT (No. 1-10); system 2 using o-MMT as nanonreactors: PP/(DCP/o-MMT)/MAH grafting system (11)(12)(13)(14)(15)(16)(17)(18)(19)(20).…”

“…e layers of MMT have thickness of about 1 nm and length of 100 nm or a little more [11][12][13]. A large surface area, nonhazardous nature, noncorrosiveness, low cost, nanosized, ease of handling, high stability, and simple processing are the featured properties of MMT.…”

Zinc-oxide nanoparticles ameliorated the phytotoxic hazards of cadmium toxicity in maize plants by regulating primary metabolites and antioxidants activity

“…Nanomaterials have significant potential in addressing environmental contamination and have gained a lot of interest because of their putative potential to accelerate nutrient availability in plants ( Basit et al., 2022a ; Ulhassan et al., 2023 ). Zinc-oxide nanoparticles (ZnO-NPs) have a diameter of less than 100 nanometers, high catalytic activity, and large surface area relative to their size ( Shirini et al., 2013 ). It has different chemical and physical behaviors depending on various materials or the routes used for the synthesis.…”

Effect of HCl Loading and Ethanol Concentration over HCl-Activated Clay Catalysts for Ethanol Dehydration to Ethylene

“…The 2:1 smectite group of dioctahedral or trioctahedral is considered as green material due to its environmental safety. It is also cheap, easy modification and availability and high surface area 17,18 . Based on previous works, MMT is used in many applications including isomerization α-pinene 19 , alkylation of toluene 20 , esterification of lauric acid 21 and dehydration n-butanol 22 .…”