Hiden Analytical Ltd. articles
Hydrogen diffusivity measurements are critical for understanding embrittlement in materials exposed to hydrogen-rich environments. The TDSLab-6 system from Hiden Analytical, which integrates Isothermal Desorption Mass Spectroscopy (ITDMS), provides a precise method for these measurements and offers advantages over traditional electropermeation (EP) techniques. The system, formerly known as the TPD Workstation, is part of the TDSLab series and is designed to deliver reliable data at a set temp
The direct conversion of methane into higher-value chemicals remains challenging due to methane's inert C–H bonds and the tendency for coke formation on catalysts. Methane dehydroaromatization MDA over transition-metal–modified ZSM-5 catalysts, notably Mo/ZSM-5, is a leading route under investigation. Co-feeding strategies with small-molecule co-reactants have shown to mitigate catalyst deactivation and extend reactor lifetimes. Biomass-derived furanic compounds such as furan, furfural, 2
The study analyzes concurrent reactions that compete with the selective catalytic reduction of nitrogen oxides by ammonia (NH3-SCR), namely ammonia oxidation (AMO) and the formation of undesired by-products N2O and NO2, over Cu/SSZ-13 and Fe–Cu/SSZ-13 zeolite catalysts. It evaluates how the method of iron introduction and reaction conditions (dry vs. wet) influence catalytic activity, selectivity, and the nature of active sites.
Bimetallic Fe–Cu/SSZ-13 catalysts were prepared in a t
Phase-dependent photo-assisted electrocatalytic reduction of nitrate to ammonia was studied using titanium dioxide (TiO2) as the catalyst. By comparing amorphous and rutile TiO2, the work demonstrates how structural order and electronic properties influence charge transfer and the formation of key reaction intermediates during nitrate conversion.
The synergistic effect of illumination and applied potential enables nitrate reduction under mild conditions, with amorphous TiO2 displaying s
Temperature-Programmed Reaction (TPRx) offers essential insight into how catalysts behave during temperature ramps. By observing the gases released or consumed during controlled heating, researchers can determine activation temperatures, identify reaction pathways, and evaluate material stability. The quality of the information derived from TPRx depends on the performance of the detector used to monitor the evolving gas stream. When reactions generate subtle or short-lived species, mass spect
Dissolved gas measurements are often the difference between suspecting what’s happening in a water system and proving it. Whether you’re tracing and dating groundwater, diagnosing denitrification, quantifying methane production, or monitoring trace contaminants, the challenge is the same: gas concentrations can be low, dynamic, and easily altered by sampling.
We sat down with Andrea Secco, Applications Sp
This study develops a biodegradable photocatalytic membrane with titanium dioxide (TiO2, p25) nanoparticles with a polylactic acid (PLA) support to remove volatile organic compounds (VOCs) from indoor air. It addresses two challenges simultaneously: (i) achieving effective gas-phase photocatalytic oxidation (PCO) of VOCs and (ii) enabling more sustainable fabrication of photocatalyst carriers. Conventional immobilization supports are often petroleum-base
In support of next-generation fusion diagnostics, Oak Ridge National Laboratory has evaluated Hiden’s high-resolution quadrupole RGA approach for the ITER Diagnostic Residual Gas Analyser (DRGA), focusing on fast, selective measurement of light species in exhaust streams. The study shows how enhanced-resolution quadrupole operation can deconvolve closely spaced masses—most notably separating 4He from
Fast Dissolved Gas Analysis for Groundwater Age, Recharge and Flow Paths
Mass spectrometry for groundwater studies provides real-time detection of transient events and supports reliable, efficient groundwater quality monitoring to help ensure the safety and sustainability of water supplies. Measure dissolved noble gases (e.g., helium, argon) and reactive gases (e.g., methane) in less t
DEMS measurements were used to measure the formation of nitrogen, nitric oxide and nitrous oxide during nitrate reduction catalyzed by bimetallic silver-copper macroporous foams in acid media. For better sensitivity and to avoid possible interference from atmospheric nitrogen, isotope 15N was used in the nitrate salt (Na15NO3). Hence the m/z fragments of 30 (15N2), 31 (15NO), and 46 (15N2O) were monitored. For p