The present work reports the impregnation of palladium (Pd) or platinum (Pt) on hierarchical porous zeolite catalysts for Volatile Organic Compounds (VOCs) oxidation. (NaYmod) was synthesized via a top-down approach to incorporate mesoporosity into microporous NaY. This process achieved through three steps synthesis: dealumination, desilication and alkaline treatment. 0.5 wt% Pd Pt precursors w...

In the Western Sangilen (Tuva–Mongolia microcontinent, Central Asian Orogenic Belt, Russia) rare mineral ferrohögbomite-2S2N, for first time, was found in a deep-seated contact aureole of early Paleozoic Bayan-Kol gabbro-monzodiorite intrusion. The rocks are diatexites roof pendant, where metamorphics gabbronorite. Diatexites formed as result strong melting and desilication quartz-bearing kyani...

Fluorite is a nonrenewable mineral used to produce anhydrous hydrofluoric acid (AHF) and aluminum fluoride. The demand for low-grade fluorite powder (CaF2 < 97%) has fallen sharply owing the current market conditions. Therefore, large number of concentrates have been improved by leaching. While this approach can efficiently remove CaCO3 from concentrate, SiO2 content, which significantly aff...

Metasilicate-rich groundwater could meet the high demand of international community for high-quality water. In order to comprehensively analyze genetic mechanism metasilicate-rich groundwater, and help human communities effectively exploit utilize water resources, taking Ji’nan rock mass area as an example, this study carried out systematic research on spatial distribution Based regional hydrog...

In the extreme north of Brazil, in Roraima, there is an important set mafic, volcanic or plutonic rocks, associated with Juro-Cretaceous magmatism, and one most extensive areas Colônia do Taiano region, first agricultural colony Roraima. addition to basalts, many diabases diorites occur, forming patch soils good suitability, cerrado-forest transition. Two soil profiles developed from diabase we...

It has long remained a challenge in catalysis to synthesize technical hierarchical nanosized zeolites without growth modifiers and binders. Herein, we report facile synthetic route directly prepare binderless Al-β zeolite shaped form, with retained acidity, sufficient mechanical strengths. The preparation process consists of two steps, where an nanopowder is first using tetraethyl orthosilicate...