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Lignite is rich in oxygen-containing species (OCSs) and able to load Ni via ion exchange to prepare Ni/C catalyst. However, the OCSs usually exists in the form of organic salts, which can reduce the capacity of Ni ion exchange. In this paper, Shengli lignite (SL) was treated with HCl and HCl/HF to selectively remove the organic salts and insoluble minerals, respectively, and the modified lignite was...
In order to meet the growing demand for reduction of pollutant emissions and improvement in thermal efficiency, advanced combustion modes, such as low-temperature combustion (LTC), premixed charge compression ignition (PCCI), have been adopted in modern diesel engines. Compared to conventional diesel combustion, the ignition delay becomes longer in advanced combustion modes. The longer ignition delay...
The deactivations of Cu–Co alloy nanoparticles supported on ZrO2 for higher alcohols synthesis from syngas were investigated. The catalysts after reaction for 200 and 1500h were compared and characterized by using N2 adsorption and desorption, X-ray diffraction, transmission electron microscopy, energy dispersive spectrometer, inductively coupled plasma mass spectrometry and thermo gravimetric analysis...
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