Mechanochemical Synthesis of Diarylethynes from Aryl Iodides and CaC2

A mechanochemical synthesis of diarylethynes from aryl iodides and calcium carbide as acetylene source is reported. The reaction is catalyzed by a palladium catalyst in the presence of copper salt, base and ethanol as liquid assisting grinding (LAG) additive. Various aryl and heteroaryl iodides have been converted in up to excellent yields.

Mechanochemical synthesis of crystalline U(vi) triperoxide solids

Mechanochemical reaction of UO3 with metal peroxides (M2O2) yields U(vi) triperoxide materials without producing radioactive solvent wastes.

Atomically dispersed Mn-N4 electrocatalyst with high oxygen reduction reaction catalytic activity from metal organic framework ZIF-8 by minimal water assisted mechanochemical synthesis

Developing efficient and stable non-precious metal (NPM) oxygen reduction reaction (ORR) catalyst in an environmentally benign and economically affordable way is highly desired but remains challenging. Manganese and nitrogen co-doped...

Air-Flow Impacting: A New Mechanochemical Method for Continuous, Highly Efficient, Large-Scale Synthesis of Metal–Organic Frameworks and Mechanistic Research

The novel air-flow impacting (AFI) synthesis technology for mechanochemical synthesis of MOFs (ZIF-67) was first reported. AFI was an improvement of the traditional mechanochemical synthesis method. The results indicated that ZIF-67 was successfully synthesized after 30 min at a rate of 60 kg h−1. The as-prepared ZIF-67 was characterized by Fourier transform infrared spectroscopy (FT-IR), powder x-ray diffraction (P-XRD), thermogravimetric analysis (DTA/TG), scanning electron microscope (SEM), transmission electron microscope (TEM), and single-crystal x-ray diffraction. The kinetic analysis of the reaction mechanism was carried out by detecting the P-XRD patterns of the products with different reaction times. The synthesis belonged to the one-dimensional diffusion-controlled model.