Results for “Ce(AlGa)2”

DOE OSTI2020

Materials Data on Ce(AlGa)2 by Materials Project

CeGa2Al2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Ga and eight equivalent Al atoms. All Ce–Ga bond lengths are 3.21 Å. All Ce–Al bond lengths are 3.50 Å. Ga is bonded in a 9-coordinate geometry to four equivalent Ce, one Ga, and four equivalent Al atoms. The Ga–Ga bond length is 2.50 Å. All Ga–Al bond lengths are 2.61 Å. Al is bonded to four equivalent Ce and four equivalent Ga atoms to form a mixture of distorted corner, edge, and face-sharing AlCe4Ga4 tetrahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2025

Electrocatalytic oxidation of hydrothermal liquefaction-derived aqueous phase for on-site wastewater treatment and H 2 production

Electrocatalytic oxidation (ECO) is a promising method for generating molecular hydrogen (H 2 ) while simultaneously treating the aqueous phase (AP) from hydrothermal liquefaction (HTL) of biomass-derived feedstocks such as algae, food waste, sludge, and wood. This study highlights the impact of HTL-AP composition on ECO performance, mainly activity, stability, and efficiency in a batch and flow electrolyzer. We demonstrated current efficiency (CE) for chemical oxygen demand (COD) removal ranges from 14% to 85% in the flow electrolyzer with electrode stability increasing from 20 to ≥2,800 h. Decreasing the applied potential enhances the CE. High ammonium content can accelerate deactivation, yet chloride ions appear to aid oxidation of organic compounds and enhanced anode stability. A preliminary energy and H 2 balance for an HTL sewage sludge plant shows that the HTL-AP contains sufficient COD to produce all the H 2 needs for bio-oil hydrotreating, with a 26% surplus available for other uses.

Electrolysis↗