Soil–bentonite cut-off walls have been widely used to control landfill pollution but they do not good chemical compatibility with leachate. Attapulgite can be substituted for bentonite in walls. However, little is known about the of attapulgite and This study experimentally investigated wall specimens organic inorganic contaminants found that a sand–attapulgite has contaminants. A CaCl2 solutio...

An organic radical based composite cathode comprised of poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) (PTMA)-Ketjenblack was developed by a simple solvent-less electrode fabrication method. The composite cathode demonstrated a two-electron redox reaction of PTMA that is from an aminoxy anion (n-type) via a radical to an oxoammonium cation (p-type) with the corresponding redox potent...

The adsorption mechanism of carbon dioxide, oxygen and nitrogen in coal is important for preventing controlling spontaneous combustion understanding the technology CO2 storage goaf. Adsorption amount heat are key parameters that required to understand material energy conversions during coal. In this study, we studied factors influence amounts values by testing four different samples using conve...

The effect of chemical activators on the properties activated carbon from sago waste was conducted in this study by using ZnCl2, H3PO4, KOH, and KMnO4 solutions. carbonized added to each solution, boiled at 85 °C for 4 h, heated 600 3 h. porosity, microstructural, proximate, surface chemistry analyses were carried out nitrogen adsorption with employing Brunauer Emmett Teller (BET) method Barret...

Bio-based furanics can be aromatized efficiently by sequential Diels-Alder (DA) addition and hydrogenation steps followed by tandem catalytic aromatization. With a combination of zeolite H-Y and Pd/C, the hydrogenated DA adduct of 2-methylfuran and maleic anhydride can thus be aromatized in the liquid phase and, to a certain extent, decarboxylated to give high yields of the aromatic products 3-...

There has always been a fascination with "impossible" compounds, ones that do not break any rules of chemical bonding or valence but whose structures are unstable and do not exist. This instability can usually be rationalized in terms of chemical or physical restrictions associated with valence electron shells, multiple bonding, oxidation states, catenation, and the inert pair effect. In the pu...

We present a modeling scheme to analyze cagelike silica mesoporous crystals based on in situ X-ray diffraction (XRD) data collected during gas adsorption-desorption (physisorption) processes. Nitrogen physisorption on a silica mesoporous crystal of SBA-16 was directly monitored by using synchrotron in situ powder XRD measurements conducted at SPring-8. SBA-16 is a well-ordered mesoporous silica...