Article
Engineering, Chemical
Alvaro Ferre, Denis Worch, Johannes Voggenreiter, Udo Lubenau, Jakob Burger
Summary: This study investigated the feasibility of water separation through pervaporation using poly(oxymethylene) dimethyl ethers (OME3-5) in water-tolerant OME3-5 production processes. The results showed that SiO2 membrane exhibited good selectivity and stability towards water, demonstrating the fundamental feasibility of this method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Andreas Billion, Jonas Schulte, Andreas Vogel, Felix Hilfinger, Ingo Krossing
Summary: A novel continuous route for synthesizing oxymethylene dimethyl ethers (OMEn) by the reaction of molecular formaldehyde and dimethyl ether is presented. Acidic, porous, and thermally stable zeolites proved to be effective catalysts for this reaction. The results contribute to a better understanding of the complex reaction network in the OMEn synthesis and provide important insights for establishing an energy efficient and sustainable OMEn production process.
Article
Engineering, Chemical
Christian F. Breitkreuz, Nicole Hevert, Niklas Schmitz, Jakob Burger, Hans Hasse
Summary: Poly(oxymethylene) dimethyl ethers (OME) are potential synthetic fuels that can replace fossil diesel fuel. However, there is still a lack of physicochemical information on essential steps in OME production. This study focuses on the formation of methylal (MAL) from dimethyl ether (DME) and formaldehyde, and found that it is a slow equilibrium reaction with a large equilibrium constant.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Johannes Voggenreiter, Alvaro Ferre, Jakob Burger
Summary: This study investigates the continuous production of OME from methanol and formaldehyde in tubular reactors filled with the ion-exchange resin Amberlyst 46 as a heterogeneous catalyst. The results show successful production of OME in the reactor and reveal catalyst deactivation which can be reversed by acid treatment.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Franz Mantei, Sebastian Kopp, Anna Holfelder, Elisa Flad, Daniela Kloeters, Matthias Kraume, Ouda Salem
Summary: Some OME have properties similar to diesel fuel, with almost no soot combustion, making them promising candidates for internal combustion engines. They are also considered environmentally friendly solvents and carriers for fuel cells. OME are produced from sustainable methanol, resulting in a significant reduction in CO2 emissions. Ion exchange resins are identified as the most suitable catalysts for industrial OME synthesis due to their higher activity and lower side product formation.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Christian Frederik Breitkreuz, Maximilian Dyga, Esther Forte, Fabian Jirasek, Jan de Bont, Jan Wery, Thomas Gruetzner, Jakob Burger, Hans Hasse
Summary: Trioxane, a cyclic trimer of formaldehyde, is an important intermediate used as a source of water-free formaldehyde in chemical production processes. A new crystallization-based process for Trioxane production was proposed and compared with the traditional pressure swing process, showing reduced energy demand and smaller recycle streams. The new process was found to be more efficient and attractive for Trioxane production.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Review
Chemistry, Multidisciplinary
Xiujuan Gao, Junfeng Zhang, Faen Song, Qingde Zhang, Yizhuo Han, Yisheng Tan
Summary: Methanol and dimethyl ether (DME) serve as important platform compounds in the coal chemical, petrochemical, and fine chemical industries. The synthesis of methanol/DME has been industrialized, but with a production capacity exceeding market demand. To make better use of these compounds, the selective oxidation of methanol/DME to produce high value-added chemicals has gained significant attention for its green and environmentally friendly nature. This article provides a summary of recent advancements in the synthesis of formaldehyde, methyl formate, dimethoxymethane, and polyoxymethylene dimethyl ethers through selective oxidation of methanol/DME. The article also explores the challenges and prospects in catalyst design and application, aiming to provide theoretical guidance for activating and cleaving C-O, C-H, or O-H bonds in other alcohol/ether molecules and low-carbon alkanes to synthesize high value-added chemicals.
CHEMICAL COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Johannes Voggenreiter, Jakob Burger
Summary: This study investigates the formation of side products during the synthesis of OME from methanol and concentrated aqueous formaldehyde solution, highlighting the accumulation of some side products in the process and the necessity of their removal. Introducing a purge stream leads to a 2.7% loss in product yield at a reactor temperature of 343.15 K, emphasizing the need for further research on side product formation, advanced removal methods, or improved catalysts under process conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
Xiaoping Wang, Lin Xu, Jianhua Song, Muhammad Asif Nawaz, Dianhua Liu
Summary: Polystyrene-based hybrid solid acids with tunable hydrophobicity and high acid density were prepared by post-synthesis grafting method. The results showed that the catalyst surface property could change from hydrophilicity to hydrophobicity by increasing the organic chain length, which effectively improved the methanol conversion and PODE3-6 selectivity. Moreover, the improvement of hydrophobicity promoted the decrease of local water concentration in the catalyst, facilitating the stabilization of carbocations.
Article
Engineering, Chemical
Ying Meng, Hong Li, Chengna Dai, Biaohua Chen, Zhigang Lei, Xingang Li, Xin Gao
Summary: The novel reactive distillation (RD) process for PODEn synthesis improves product yield and selectivity while reducing energy consumption and costs. Sensitivity analysis of key operating parameters and techno-economic analysis support the feasibility of the RD process for PODEn production.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Andreas Billion, Andreas Vogel, Jonas Schulte, Harald Scherer, Ingo Krossing
Summary: Oxymethylene dimethyl ethers (OMEn) are promising sustainable synthetic fuels synthesized from CO2 and green H-2. This study presents a novel continuous, anhydrous reaction setup to overcome synthetic problems and successfully synthesizes OMEn. The catalysts immobilized in ionic liquids demonstrate excellent catalytic performance and stable results in continuous operations.
Article
Engineering, Chemical
Guilin Liu, Feng Xin, Chen Cao, Xubin Zhang, Qian Lei, Honglin Chen, Hailun Ren
Summary: Poly(oxymethylene) dimethyl ethers (PODEn=3-5) were synthesized under the catalysis of zeolite BETA and kinetically studied. The research showed that the maximal selectivity of TOX to PODE3-5 was achieved under anhydrous conditions.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Physics, Multidisciplinary
Shuxing Zhang, Xiaoshu Ding, Helen Shang, Yucong Song, Yanji Wang
Summary: This paper discusses the challenges in the production of dimethyl carbonate and proposes a strategy of reaction instead of separation. By developing a new process that combines the production of dimethyl carbonate with dimethoxymethane and dimethyl ether, the energy efficiency is significantly improved.
Article
Energy & Fuels
Yannic Toenges, Vincent Dieterich, Sebastian Fendt, Hartmut Spliethoff, Jakob Burger
Summary: OME is a promising synthetic renewable fuel that can reduce soot and CO2 emissions, with production costs depending on methanol prices. This study investigates the production of OME from methanol and designs seven routes for providing methanolic formaldehyde solutions. The overall economics of the production chain from methanol to OME is evaluated for a plant size of 100 kt/a, showing an average levelized product cost of 79.08 EUR/t plus 1.31 times the cost of methanol in EUR/t.
Article
Chemistry, Multidisciplinary
Franz Mantei, Christian Schwarz, Ali Elwalily, Florian Fuchs, Andrew Pounder, Hendrik Stein, Matthias Kraume, Ouda Salem
Summary: Oxymethylene dimethyl ethers (OME) have potential for solubility and combustion properties that can reduce NOx and CO2 emissions. The common production methods have limitations, but the COMET process using methanol and formalin overcomes these challenges and achieves high carbon and energy efficiency. COMET offers a simple and scalable solution for large-scale OME production.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Physics, Multidisciplinary
Edder J. Garcia, Hans Hasse
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2019)
Article
Thermodynamics
Martin P. Lautenschlaeger, Hans Hasse
FLUID PHASE EQUILIBRIA
(2019)
Correction
Thermodynamics
Johannes Neuhaus, Erik von Harbou, Hans Hasse
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2019)
Article
Chemistry, Physical
Simon Stephan, Kai Langenbach, Hans Hasse
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Martin P. Lautenschlaeger, Hans Hasse
Article
Engineering, Chemical
Fabian Jirasek, Jakob Burger, Hans Hasse
Article
Engineering, Chemical
Dan Vasiliu, Elmar Kessler, Erik von Harbou, Hans Hasse
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2020)
Article
Thermodynamics
Daniel Bellaire, Hendrik Kiepfer, Kerstin Muennemann, Hans Hasse
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2020)
Article
Thermodynamics
Alexander Keller, Irenaus Wlokas, Maximilian Kohns, Hans Hasse
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2020)
Article
Biochemical Research Methods
Anne Friebel, Thomas Specht, Erik von Harbou, Kerstin Muennemann, Hans Hasse
JOURNAL OF MAGNETIC RESONANCE
(2020)
Article
Chemistry, Physical
Fabian Jirasek, Rodrigo A. S. Alves, Julie Damay, Robert A. Vandermeulen, Robert Bamler, Michael Bortz, Stephan Mandt, Marius Kloft, Hans Hasse
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Chemistry, Physical
Simon Stephan, Hans Hasse
Article
Engineering, Chemical
Nadia Galeotti, Eva Hackemann, Fabian Jirasek, Hans Hasse
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Engineering, Multidisciplinary
Felix Diewald, Martin P. Lautenschlaeger, Simon Stephan, Kai Langenbach, Charlotte Kuhn, Steffen Seckler, Hans-Joachim Bungartz, Hans Hasse, Ralf Mueller
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2020)
Article
Physics, Fluids & Plasmas
Simon Stephan, Hans Hasse