A5114235639- Zeolite Catalysis and Synthesis
- Chemical Synthesis and Characterization
- Metal-Organic Frameworks: Synthesis and Applications
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Transportation Planning and Optimization
- Advanced ceramic materials synthesis
- High-Temperature Coating Behaviors
- Traffic Prediction and Management Techniques
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Nuclear materials and radiation effects
- Regional Economic and Spatial Analysis
- Economic Zones and Regional Development
- Catalysis for Biomass Conversion
- Crystal Structures and Properties
- Data Management and Algorithms
- Human-Automation Interaction and Safety
- Complex Network Analysis Techniques
- Sport and Mega-Event Impacts
- Layered Double Hydroxides Synthesis and Applications
- Advanced materials and composites
- Fault Detection and Control Systems
- Cross-Border Cooperation and Integration
- Traffic control and management
Dalian Institute of Chemical Physics
2016-2025
Chinese Academy of Sciences
2014-2025
Dalian National Laboratory for Clean Energy
2016-2025
Shanghai Institute of Ceramics
2022-2024
University of Chinese Academy of Sciences
2011-2024
Collaborative Innovation Center of Chemistry for Energy Materials
2017-2024
Dalian Polytechnic University
2024
Nanjing Tech University
2022-2023
Dalian University
2014-2019
Qingdao Academy of Intelligent Industries
2016-2017
Pyridine-modified mordenite (MOR) zeolite catalysts have attracted great attention in recent years due to their unique shape selectivity within eight-membered ring (8-MR) side pockets for dimethyl ether (DME) carbonylation methyl acetate (MA) and syngas conversion ethylene. Herein, aimed at elucidating pyridine modification–carbonylation activity relationships developing high-performance catalysts, we investigated the adsorption/desorption behaviors of on MOR zeolites with varying Si/Al...
Different templates usage for mesoporous ZSM-5 synthesis and their catalytic properties were systematically investigated.
Abstract High‐silica zeolite Y is a desired catalytic material for oil refining and the petrochemical industry. However, its direct synthesis remains symbolic challenge in field of synthesis, with limited improvement framework SiO 2 /Al O 3 ratio (SAR) from ≈5 to 9 over past 60 years. Here, highly siliceous tunable SAR up 15.6 through cooperative strategy reported, which involves use FAU nuclei, bulky organic structure‐directing agent (OSDA), gel system low alkalinity (named NOA‐co...
A novel solvothermal synthesis route designated as aminothermal synthesis, in which organic amines are used both the dispersing medium and template, is developed for of SAPO molecular sieves. Three synthetic systems based on triethylamine (TEA), diethylamine (DEA) TEA-DEA binary mixture were studied. SAPO-34 with good crystallinity high yield (ca. 90%) was successfully synthesized from TEA systems. By adjusting crystallization temperature, SAPO-18 first time obtained using template. In case...
Transport resistance in microporous zeolites has an important impact on their applications catalysis. Relative to the well-known intracrystalline transport resistance, significance of surface barriers catalytic performance not been well recognized. Herein, we report that DME carbonylation reaction can be governed by zeolites, affecting both catalyst activity and stability. The two MOR used for investigation were synthesized different organic structure-directing agents (OSDAs). They possess...
High-silica zeolite Y (FAU) plays a vital role in (petro)chemical industries. However, the slow nucleation and growth kinetics of high-silica FAU framework limit its direct synthesis improvement SiO2 /Al2 O3 ratio (SAR). Here, facile strategy is developed to realize fast crystallization Y, which involves combination high temperature, ultra-stable (USY) seeds efficient organic-structure directing agent (OSDA). The can be finished 5-16 h at 160 °C with tunable SAR up 18.2, key factors...
The facile synthesis of SAPO-34 nanocrystallites with excellent performance for carbohydrates dehydration to 5-hydroxymethylfurfural.
Syngas conversion into ethanol by tandem catalysis has exhibited its potential for the selective production of ethanol. For practical applications, it is desired to develop a robust catalyst system enhance CO while maintaining high selectivity Here, we report an efficient and stable triple-tandem consisting CuZnAlOx/γ-Al2O3, pyridine-modified H-MOR zeolite (Py-HMOR), Cu1Zn2AlOx, which catalyzes syngas dimethyl ether (DME), DME carbonylation methyl acetate (MA), MA hydrogenation in tandem....
SAPO-34 and a novel SAPO molecular sieve with the RHO framework (designated as DNL-6) were synthesized using SAPO-5 (the denser phase) precursor diethylamine (DEA) template. The entire transition process had been investigated by XRD, SEM, XRF, NMR spectroscopy, which clearly revealed solution-mediated transport mechanism attributed to transformation from via oscillating phases [SAPO-5 (FD = 16.9 T/nm3) => (15.1) + DNL-6 (14.5) → SAPO-34]. initially formed was different final one in this due...
Aminothermal synthesis of SAPO molecular sieves, in which organic amines are used as both solvent and template, is explored based on a variety amines. Di-iso-propylamine (DIPA) N,N,N′,N′-tetramethylethylenediamine (TMEDA) found to lead the rapid crystallization SAPO-34 with high solid yield. A yield 96.2% could be acquired using TMEDA system (200 °C, 12 h), highest value ever reported for sieves. SAPO-44 obtained first time hexamethyleneimine (HMI) template. Detailed synthetic investigation...
Millimeter-sized spherical mordenite (MOR) zeolite with good mechanical strength was successfully prepared via vapor-assisted transformation of Na- and Al-doped SiO2 spheres. It is demonstrated that the precursor by vacuum impregnation essential for achievement well-retained morphology; presence organic amine (such as TEAOH, TMAOH, HMI) in vapor can help promote crystallization, avoid core-shell morphology, improve Si/Al ratio, although MOR crystal morphology products varies choice amines....
Abstract Yb 2 SiO 5 and Si O 7 have been considered to be promising environmental barrier coatings (EBCs) materials for silicon‐based ceramics. Besides the various requirements EBCs must satisfy, it resistant severe corrosion by high‐temperature water vapor as well CMAS. In this work, , /Yb /Si, /Si were subjected steam with alumina at 1400°C 200 h. Results showed that 3 Al 12 reaction layer formed on Yb2SiO5 coating, while porous phase was coating. By designing intermediate layer,...
Abstract The synthesis of DNL‐6 with a high concentration Si (4 Al) environments [Si/(Si+Al+P)=0.182 mol, denoted as M‐DNL‐6] is demonstrated. This represents the highest reported such in silicoaluminophosphate (SAPO) molecular sieves. Adsorption studies show that content M‐DNL‐6, an increased number Brønsted acid sites framework, greatly promotes adsorption CO 2 . M‐DNL‐6 exhibits large uptake capacity up to 6.18 mmol g −1 at 273 K and 101 kPa, demonstrates ratios /CH 4 /N separation. From...