HEИндивидуална стипендия2022–2024

CURVEO · Selective ethylene oxidation on novel curved model catalysts

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2022-06-01 → 2024-05-31
Финансиране от ЕС: 165 313 €
Участници: 2
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Сребърните катализатори се анализират, за да се разбере как повърхността им влияе върху превръщането на етилена в етиленоксид. Това помага да се запълни разликата между лабораторните условия и реалните индустриални процеси.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Selective ethylene oxidation on novel curved model catalysts

The CURVEO project aims to advance our understanding of selective ethylene epoxidation. Silver-based (Ag) model catalysts were employed to investigate how different surface structures influence the reaction mechanism. Ethylene oxide (EO), a valuable chemical for various industrial applications, is produced through the direct oxidation of ethylene using silver-based catalysts. Traditional surface science techniques face limitations in replicating real industrial conditions, referred to as the materials and pressure gaps. The pressure gap highlights the disparity between ultra-high vacuum (UHV) conditions in laboratories and the high-pressure conditions in industrial processes. The materials gap points to the difference between idealized research surfaces and the complex, heterogeneous surfaces of industrial catalysts. CURVEO bridges these gaps by studying selective ethylene epoxidation under near-ambient pressure conditions in atomic detail. The project systematically characterizes different surface species and intermediates, studies their occurrence during active reaction conditions, and correlates changes in reactivity with specific surface features. This is an important step to elucidate the various pathways occurring in parallel on real catalytic materials with complex surfaces.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Heterogeneous catalysis has made a wide range of highly functionalized materials available to us and therefore is an important contributor to economy and society. Ethylene epoxidation is a keystone process of the chemical industry, because it produces one of the building block chemicals, ethylene oxide, from which a range of high-value chemicals can be manufactured. However, product formation competes with complete combustion to CO2, and the process is nowadays the largest CO2 emitter of the European industry. The reaction mechanisms that lead to either EO or CO2 formation, as well as the role of the catalytic surface, are still not determined. The project will implement a new approach to study the mechanism of ethylene oxidation under realistic reaction conditions, while making use of surface-sensitive and atomically accurate techniques. We will employ curved single crystals with tuneable surface structures as model catalysts to unveil site-specific reaction pathways for ethylene oxidation under both UHV and reaction conditions. We will explore the formation of different intermediate species, and determine the selectivity of the ethylene oxidation reaction. This approach significantly exceeds the current state-of-the-art, setting a new paradigm for the understanding of catalytic systems. The impact on academic research and industrial applications will be substantial.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSIDAD DEL PAIS VASCO/ EUSKAL HERRIKO UNIBERTSITATEA · LeioaКоординаторИспания
LUNDS UNIVERSITET · LundШвеция