Back to Search
Start Over
CuZnZr-Zeolite Hybrid Grains for DME Synthesis: New Evidence on the Role of Metal-Acidic Features on the Methanol Conversion Step
- Source :
- Catalysts, Volume 10, Issue 6, Catalysts, Vol 10, Iss 671, p 671 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- The assessment of the catalytic performance of &ldquo<br />hybrid&rdquo<br />metal/zeolite catalysts (based on FER or MFI structure and CuZnZr metal complexes) in the methanol dehydration step to DME has been studied in this work. The results clearly show that there is an important effect of the interaction between metal and acid sites affecting the acid catalyst performances. Additionally, deactivation, studied by means of a Timo-on-Stream (TOS) test, was affected by the type of zeolite structure used for hybrid catalyst preparation. The decrease in DME selectivity can be attributed to the cooperation of metal and acid sites in the production of different compounds (mainly methyl formate and dimethoxy methane) converting methanol and DME. The presence of these compounds (indicating different reaction pathways active) was found to be dependent on the zeolite structure and on the type of co-precipitation medium (water or ethanol) used to prepare the hybrid catalyst.
- Subjects :
- Methyl formate
Inorganic chemistry
02 engineering and technology
lcsh:Chemical technology
010402 general chemistry
01 natural sciences
Catalysis
Methane
lcsh:Chemistry
Metal
chemistry.chemical_compound
lcsh:TP1-1185
zeolite
conversion
Physical and Theoretical Chemistry
Zeolite
methanol
Ethanol
selectivity
021001 nanoscience & nanotechnology
0104 chemical sciences
lcsh:QD1-999
chemistry
visual_art
hybrid catalyst
visual_art.visual_art_medium
Methanol
0210 nano-technology
Selectivity
Subjects
Details
- ISSN :
- 20734344
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Catalysts
- Accession number :
- edsair.doi.dedup.....801c6bc18cb61e685d6ec29ad2e5c453