Abstract Accurate and quantitative investigation of the physical structure fractal geometry coal has important theoretical practical significance for bed methane (CBM) development prevention dynamic disasters such as gas outbursts. This study investigates pore characteristics soft hard coals using nitrogen carbon dioxide (N 2 /CO ) adsorption. Coal samples from Pingdingshan Mine in Henan provin...

Groundwater-surface water interactions play a crucial role in hydrologic cycles, especially arid and semi-arid basins. There is growing interest developing integrated models to describe groundwater-surface the associated processes. In this study, an process-based model, ParFlow, was tested utilized quantify responses, such as changes surface runoff surface/subsurface storage. We progressively c...

Functionalized alkenes were successfully synthesized via a clean procedure in short time by using new recycled heterogeneous catalyst prepared from Moroccan oil shale, this is characterized different technics such XRD, BET-BJH, MEB-EDS, and TGA, before it’s has been used the Knoevenagel condensation between aldehydes active methylenes. The results showed that coupling with ultrasound irradiatio...

in this work, bsea-sba-15 was prepared for the first time, which was prepared by covalently anchoring schiff-base compound (n,n´-bis(salicylidene)ethylenediamine (bsea) on sba-15 by hydrothermal method. the structure and physicochemical properties were determined by elemental analysis, xrd, nitrogen adsorption–desorption, thermogravimetric analysis and ftir spectroscopy, sem, bet surface area a...

Sol-gel derived sulfur modified and pure ZnO nanorod were prepared using zinc chloride and thiocarbamide as raw materials. Prepared nanorods were characterized by means of X-ray diffraction (XRD), thermogravimetry- differential scanning calorimetry (TG–DSC), UV- Vis absorption spectroscopy, Brunauer Emmett Teller (BET) specific surface area and Barrett Joyner Halenda (BJH) pore size distributio...

Sol-gel derived sulfur modified and pure ZnO nanorod were prepared using zinc chloride and thiocarbamide as raw materials. Prepared nanorods were characterized by means of X-ray diffraction (XRD), thermogravimetry- differential scanning calorimetry (TG–DSC), UV- Vis absorption spectroscopy, Brunauer Emmett Teller (BET) specific surface area and Barrett Joyner Halenda (BJH) pore size distributio...

S-doped and bare mesoporous TiO2 were prepared using titanium tetraisopropoxide and thiocarbamide as raw materials. Prepared materials were characterized by means of fourier transform infrared spectroscopy FT-IR, thermogravimetry-differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), UV–Vis absorption spectroscopy, Brunauer–Emmett–Teller (BET) specific surface area and Barrett–Joy...