The crystal structure of members of the pyrophanite–ecandrewsite solid-solution series, Mn1–xZnxTiO3 (0.1 ≤ x ≤ 0.8 apfu), synthesized by ceramic methods in air at ambient pressure, has been characterized by Rietveld analysis of powder X-ray-diffraction patterns. All of these compounds crystallize with the ilmenite structure and adopt space group R3̄. The maximum solubility of Zn in MnTiO3 is co...

Chemical looping combustion (CLC) is a novel concept that transfers oxygen from air to fuel using an carrier circulates between reactor and reactor. Thus, the products, H2O CO2, are obtained in separate flow, ideally, pure CO2 gas stream after condensation of H2O. Consequently, CLC has unique potential for avoiding high costs energy penalties capture. Further, NO emissions can potentially be av...

Chemical looping combustion (CLC) of biomass is a promising technology for power generation with integrated carbon capture. In CLC, alkali content poses potential issues bed agglomeration, as well heat exchanger fouling and corrosion. The fate alkalis was investigated in dual-interconnected circulating fluidized CLC system. Experiments were conducted oxygen carrier aided (OCAC) modes. Ilmenite ...

-In a lateritic pallid zone ilmenite crystals alter via pseudorutile to porous leucoxene grains composed of randomly oriented aggregates of ~0.06/~m anatase crystals. This style of alteration differs from that in beach sands where parallel oriented futile crystals develop from pseudorutile. Increased Si and A1 in the altered grains is due to the crystallization from soil solution of halloysite,...

Dust electrostatic migration is one of the primary causes dust events on surface airless celestial bodies, which can result in multiple phenomena, including lunar horizon glow and pools, also offer crucial insights into evolution materials bodies. To date, characteristics laws are still not well understood. Here, we report pyroxene, olivine, ilmenite particles measured by laser Doppler method c...

Major and trace element composition of silicate melt inclusions (SMI) their rock-forming minerals were studied in mafic garnet granulite xenoliths from the Bakony–Balaton Highland Volcanic Field (Western-Hungary). Primary SMIs occur clinopyroxene plagioclase plagioclase-rich domains granulites ilmenite vicinity these wall rock. Based on major elements, we demonstrated that have no connection wi...

Triboelectric charging and free-fall separation are attractive technologies for lunar mineral beneficiation. Here, an optimised tribocharger design was built evaluated under terrestrial conditions. The behaviour of pure silica ilmenite were tested using the design, as mixtures ilmenite, samples regolith simulant JSC-1. Pure acquired negative positive charge, respectively, through contact with t...