Abundant pore space in coal is not only the place for accumulation of coalbed methane (CBM), but also tunnel gas migration. In this study, five sets samples before and after second coalification were selected from eastern margin Ordos Basin to simulate supercritical CO 2 (Sc-CO ) extraction equipment. The evolutions structure porosity tested by mercury intrusion porosimetry nuclear magnetic res...

Herein, a novel C=O–NOH-contained compound was synthesized and used in the extraction recovery of copper from sulfate solution. Dodecyl phenyl ethyl hydroxamic acid (DPEHA) exhibited high selectivity to Cu(II) over competing ions, separation factors (β) obtained were βCu/Zn = 227.370, βCu/Co 199.094, βCu/Ni 188.889, respectively. The effect stronger than that 2-hydroxy-5-nonyl acetophenone oxim...