A5049451461- Zeolite Catalysis and Synthesis
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Recycling and Waste Management Techniques
- Catalysis and Oxidation Reactions
- Thermochemical Biomass Conversion Processes
- Catalysis for Biomass Conversion
- Polyoxometalates: Synthesis and Applications
- Microplastics and Plastic Pollution
- Chemistry and Chemical Engineering
- Catalysts for Methane Reforming
- 2D Materials and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Nanomaterials for catalytic reactions
- Advanced Data Processing Techniques
- Advanced Nanomaterials in Catalysis
- Chemical Reaction Mechanisms
- Graphene research and applications
- Aluminum Alloys Composites Properties
- High-pressure geophysics and materials
- Polymer crystallization and properties
- Electrocatalysts for Energy Conversion
Washington State University
2018-2024
University of Wisconsin–Madison
2022-2024
This paper reviewed the entire life cycle of plastics and options for management plastic waste to address barriers industrial chemical recycling further provide perceptions on possible opportunities with such materials.
Waste plastics are an abundant feedstock for the production of renewable chemicals. Pyrolysis waste produces pyrolysis oils with high concentrations olefins (>50 weight %). The traditional petrochemical industry uses several energy-intensive steps to produce from fossil feedstocks such as naphtha, natural gas, and crude oil. In this work, we demonstrate that oil can be used aldehydes through hydroformylation, taking advantage olefin functionality. These then reduced mono- dialcohols,...
MXenes, most commonly transition metal carbides, are a family of two-dimensional (2D) materials with promising potential in, among other applications, supercapacitors and batteries. MXenes synthesized by etching aluminum or gallium layers in its parent MAX phase directly HF situ formation using fluoride salt strong acid. A undesired byproduct MXene synthesis is AlF3·3H2O. To relieve from AlF3·3H2O impurity, it important to elucidate the factors that drive formation. Here, we dually deduce...
Abstract Noble metals have been extensively employed in a variety of hydrotreating catalyst systems for their featured functionality hydrogen activation but may also bring side reactions such as undesired deep hydrogenation. It is crucial to develop viable approach selectively inhibit while preserving beneficial functionalities. Herein, we present modifying Pd with alkenyl-type ligands that forms homogeneous-like Pd-alkene metallacycle structure on the heterogeneous achieve selective...
Development of inexpensive sulfur-free catalysts for selective hydrogenolysis the C-O bond in phenolics (i.e., removal oxygen without aromatic ring saturation) under liquid-phase conditions is highly challenging. Here, we report an efficient approach to engineer earth-abundant Fe with a graphene overlayer and alkali metal Cs), which produces arenes 100% selectivity from hydrodeoxygenation (HDO) high durability. In particular, that thin (a few layers) surface can be engineered on metallic...
Through the combination of pyrolysis, hydroformylation, and reductive amination, waste polyolefins have potential to produce primary aliphatic amines.
Dual Lewis acidic centers, CeO x and framework Sn, confined in Beta zeolite, catalyze the acetone C–C coupling followed by deoxygenation to isobutene, achieving a desirable product distribution stability absence of water.
Water plays pivotal roles in tailoring reaction pathways many important reactions, including cascade C–C bond formation and oxygen elimination. Herein, a kinetic study combined with complementary analyses (DRIFTS, isotopic study, 1H solid-state magic angle spinning nuclear magnetic resonance) density functional theory (DFT) calculations are performed to elucidate the of water acetone-to-isobutene reactions on ZnxZryOz mixed metal oxide balanced Lewis acid–base pairs. Our results reveal that...
Less than 10% of the plastics generated globally are recycled, while rest incinerated, accumulated in landfills, or leach into environment. New technologies emerging to chemically recycle waste that receiving tremendous interest from academia and industry. Chemists chemical engineers need understand fundamentals these design improved systems for recycling upcycling plastics. In this paper, we review entire life cycle options management plastic address barriers industrial further provide...
mmen-Mg2(dobpdc) (mmen = N,N′-dimethylethylenediamine, dobpdc 4,4′-dioxidobiphenyl-3,3′-dicarboxylate) is a diamine-appended metal–organic framework (MOF) material with promising future as an efficient CO2 capture sorbent for industry applications. Here, using adsorption calorimetry, the energetic landscape of hydration has been revealed. Specifically, at near-zero water coverage, results in most exothermic differential enthalpy −110.9 ± 3.1 kJ/mol water. A plateau −65.8 4.7 observed...
Real-time DRIFTS reveals the formation of acetone enolate and its subsequent aldolization <italic>via</italic> an Eley–Rideal type mechanism on Zn<sub>1</sub>Zr<sub>10</sub>O<sub>z</sub>.
Mechanistic investigation of the catalytic conversion model compounds for plastic pyrolysis oil (1-octene, octadiene, octane, and toluene) over ZSM-5 in a fixed-bed reactor was studied. Octene breaks down into smaller olefins, which undergo further cracking, oligomerization, cyclization, hydrogen transfer to eventually produce benzene, toluene, xylene (BTX), coke, hydrogen. The effect contact time on 1-octene investigated compared with thermodynamics analyses elucidate reaction network....
Correction for ‘Expanding plastics recycling technologies: chemical aspects, technology status and challenges’ by Houqian Li et al. , Green Chem. 2022, 24 8899–9002, https://doi.org/10.1039/D2GC02588D.
Abstract Zeolites with encapsulated transition metal species are extensively applied in the chemical industry as heterogenous catalysts for favorable kinetic pathways. To elucidate energetic insights into formation of subnano‐sized molybdenum trioxide (MoO 3 ) encapsulated/confined zeolite Y (FAU) from constituent oxides, we performed a systematic experimental thermodynamic study using high‐temperature oxide melt solution calorimetry major tool. Specifically, enthalpy each MoO /FAU is less...
Less than 10% of the plastics generated globally are recycled, while rest incinerated, accumulated in landfills, or leach into environment. New technologies emerging to chemically recycle waste that receiving tremendous interest from academia and industry. Chemists chemical engineers need understand fundamentals these design improved systems for recycling upcycling plastics. In this paper, we review entire life cycle options management plastic address barriers industrial further provide...
Correction for ‘Expanding plastics recycling technologies: chemical aspects, technology status and challenges’ by Houqian Li et al. , Green Chem. 2022, https://doi.org/10.1039/d2gc02588d.
Zeolites with encapsulated transition metal species are extensively applied in the chemical industry as heterogenous catalysts for favorable kinetic pathways. To elucidate energetic insights into formation of subnano-sized molybdenum trioxide (MoO3) encapsulated/confined zeolite Y (FAU) from constituent oxides, we performed a systematic experimental thermodynamic study using high temperature oxide melt solution calorimetry major tool. Specifically, enthalpy each MoO3/FAU is less endothermic...