The recent development and market introduction of a new type alkaline stable imidazole-based anion exchange membrane related ionomers by Dioxide Materials is enabling the advancement improved electrochemical processes which can operate at commercially viable operating voltages, current efficiencies, densities. These include conversion CO2 to formic acid (HCOOH), carbon monoxide (CO), water electrolysis, generating hydrogen high densities low voltages without need for any precious metal...

Formic acid generated from CO2 has been proposed both as a key intermediate renewable chemical feedstock well potential energy storage media for hydrogen. In this paper, we describe novel three compartment electrochemical cell configuration with the capability of directly producing pure formic product in concentration range 5 – 20 wt% at high current densities and Faradaic yields. The employs Dioxide Materials Sustainion™ anion membrane, allowing improved reduction performance. Stable...

This paper will consider the effects of catalyst composition on alkaline membrane electrolyzers with Sustainion™ membranes. In previous work, we have demonstrated that membranes are stable at 60 °C for least 1500 hours in 1 M KOH. Here compare a number catalysts performance an water electrolyzer. Tests using 5 cm² cell KOH show able to maintain A/cm² 1.9 V NiFe2O4 anode and FeNiCo cathode stainless steel fiber nearly 2000 degradation rate only µV/hr.

Abstract The efficient conversion of formate into oxalate could enable the industrial‐scale synthesis multi‐carbon compounds from CO 2 by C−C bond formation. We found conditions for highly selective catalytic molten alkali formates pure solid salts. Nearly quantitative was accomplished calcination sodium with hydride. A mechanism proceeding through a carbonite intermediate, generated upon H evolution, supported density functional theory calculations, Raman spectroscopy, and observed changes...

Abstract Chloric acid, HClO 3 , is a new oxidizer which has recently been shown to be an effective agent in the simultaneous removal of NOx and/or SOx from combustion flue gases and various chemical processes, including nitrations metal pickling. Aqueous chloric acid readily reacts with NO SO 2 even dilute solutions at ambient temperatures. Chlorine dioxide, ClO formed as intermediate solution phase oxidation reactions. The by‐products include nitric acid. generated reactions also...

Previous investigations have shown ferrous iron application to be an effective and economically feasible method of removing residual chlorine dioxide chlorite ion from drinking water. This treatment, however, was not in reducing concentrations chlorate ion. To address this issue, combined methodologies (alternative generation together with reduction) been developed that significantly reduce finished‐water oxychlorine residuals. These the effect various treatment conditions toward low‐level...

New methods in lowering energy consumption costs for evaporation and concentration are needed many commercial chemical processes. Pervaporation is an underutilized, low-energy processing method that has a potential capability achieving lower costs. A recently developed new electrochemical process can generate 5–25 wt% pure formic acid (FA) from the reduction of CO2 requires producing more concentrated FA product use both on-site plant applications. In order to accomplish this, 25 cm2...

Water electrolyzers are being developed as a way of storing renewable energy, to produce hydrogen for fuel cell automobiles, and route fuels chemicals. In this paper, we demonstrate alkaline water at 60 °C with iron/nickel/cobalt catalysts that show 1 A/cm² 1.9 V potential The performance is stable 2000 hours, showing only 3-5 µV/hr degradation. Key the findings development new Sustainion™ exchange membranes high conductivity stability in M KOH. paper will discuss developments improve...

Carbon dioxide (CO 2 ) electrolysis provides a pathway to turn waste CO into valuable fuels and chemicals but most previous efforts demonstrate low selectivity, high overpotential rates for the targeted products. In recent work Dioxide Materials has been using Sustainion™ imidazolium functionalized membranes ionomers improve performance. Runs at fixed current density of 200 mA/cm showed that one can maintain 98% selectivity six months about 3 V applied potential, with voltage increase only 5...

This paper will consider the effects of catalyst composition on alkaline membrane electrolyzers with Sustainion™ membranes. In previous work 1, 2 we have demonstrated that membranes are stable at 60 °C for least 1500 hours in 1 M KOH. Here compare a number base metal catalysts performance an water electrolyzer. Figure shows voltage needed to maintain A/cm electrolyzer running The blue circles were taken nickel nanoparticles carbon both anode and cathode. Initially observed good performance,...

Formic acid generated from CO2 has been proposed both as a key intermediate renewable chemical feedstock well potential energy storage media for hydrogen. In this paper, we describe novel three compartment electrochemical cell configuration with the capability of directly producing pure formic product in concentration range 5 – 20 wt% at high current densities and Faradaic yields. The employs Dioxide Materials Sustainion™ anion membrane, allowing improved reduction performance. Stable...

Water electrolyzers are being developed as a way of storing renewable energy, to produce hydrogen for fuel cell automobiles, and route fuels chemicals. In this paper the effect changes in cathode catalyst on performance an anion exchange membrane water electrolyzer with Sustainion® membranes running at 60 °C 1 M KOH. We choose commercial catalysts study: Raney nickel from W.R. Grace, NiFeCo Ni 8 Fe 2 US Nano, NiMoB, FeCoBSi, 80 Mo 20 Fraunhofer Institute Manufacturing Technology (IFAM),...