Elucidating the promotional effect of ultra-low Zn content on Cu for CO2 hydrogenation to methanol

D Gómez, S Collins, P Concepción, R Jiménez… - Journal of …, 2023 - Elsevier
CO 2 hydrogenation to methanol is currently of great importance for energy and
environmental objectives. Herein, the effect of ultra-low amounts of Zn on Cu/SiO 2 catalysts …

Combined role of Ce promotion and TiO2 support improves CO2 hydrogenation to methanol on Cu catalysts: Interplay between structure and kinetics

T Vergara, D Gómez, BL de Oliveira Campos… - Journal of …, 2023 - Elsevier
Ce promotion increases the rate of methanol formation by two orders of magnitude
compared to Cu/TiO 2 and Cu/SiO 2 catalysts. The promotion proceeds via the generation of …

A New Look at Catalyst Surfaces at Work: Introducing Mixed Isotope Operando Infrared Spectroscopy (MIOIRS)

M Monai - ACS Catalysis, 2024 - ACS Publications
This Perspective focuses on the characterization of supported metal catalysts by operando
and CO infrared (IR) spectroscopy. CO IR spectroscopy is a powerful technique for probing …

Observation of reduction on alkane products in butene cracking over ZSM-5 modified with Fe, Cu, and Ni catalysts

C Auepattana-aumrung, S Praserthdam, S Wannakao… - Fuel, 2021 - Elsevier
The transition metals: iron (Fe), copper (Cu), and nickel (Ni) were doped on ZSM-5 (Si/Al=
20), Na-ZSM-5, and H-ZSM-5 supports by incipient-wetness impregnation to investigate the …

[HTML][HTML] Dynamics of bound states of dihydrogen at Cu (I) and Cu (II) species coordinated near one and two zeolite framework aluminium atoms: A combined sorption …

PA Georgiev, N Drenchev, KI Hadjiivanov… - international journal of …, 2021 - Elsevier
Ambient conditions sorption isotherms of dihydrogen in a series of various levels of Cu-
exchanged ZSM-5 zeolites, with two different Si/Al ratios, namely 11.5 and 25, show the …

A study of Cu-SAPO-34 catalysts for SCR of NOx by ammonia

M Cortés-Reyes, E Finocchio, C Herrera… - Microporous and …, 2017 - Elsevier
Abstract H-SAPO-34 and Cu-SAPO-34 catalysts have been synthesized by a hydrothermal
method using ultrasound and diethylamine (DEA) as structural directing agent. Copper has …

Disproportionation of associated Cu2+ sites in Cu-ZSM-5 to Cu+ and Cu3+ and FTIR detection of Cu3+ (NO) x (x= 1, 2) species

M Tortorelli, K Chakarova, L Lisi, K Hadjiivanov - Journal of catalysis, 2014 - Elsevier
Adsorption of NO on an over-exchanged Cu-ZSM-5 sample (SiO 2/Al 2 O 3= 23) leads to
formation of the well-known nitrosyl species of Cu 2+ and Cu+. In addition, two kinds of Cu …

Surprising Coordination Chemistry of Cu+ Cations in Zeolites: FTIR Study of Adsorption and Coadsorption of CO, NO, N2, and H2O on Cu–ZSM-5

V Zdravkova, N Drenchev, E Ivanova… - The Journal of …, 2015 - ACS Publications
Cations exchanged in zeolites are generally characterized by a low coordination number
and can thus attach simultaneously more than one small guest molecule. For instance, Cu+ …

Purification of hydrogen from CO with Cu/ZSM-5 adsorbents

M Mihaylov, E Ivanova, V Zdravkova, S Andonova… - Molecules, 2021 - mdpi.com
The transition to a hydrogen economy requires the development of cost-effective methods
for purifying hydrogen from CO. In this study, we explore the possibilities of Cu/ZSM-5 as an …

One-Pot Cu/SAPO-34 for Continuous Methane Selective Oxidation to Methanol

L Sun, Y Wang, X Gu, M Zhao, L Yuan - Molecules, 2024 - mdpi.com
Cu/SAPO-34 synthesized via a one-pot method with relatively low silicon content and
copper loading at around 2 wt.% facilitated continuous oxidation of methane to methanol …