Ydna M. Questell‐Santiago

ORCID: 0000-0002-6447-9263
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About
Contact & Profiles
Research Areas
  • Biofuel production and bioconversion
  • Catalysis for Biomass Conversion
  • Lignin and Wood Chemistry
  • Microbial Metabolic Engineering and Bioproduction
  • Fermentation and Sensory Analysis
  • biodegradable polymer synthesis and properties
  • Food composition and properties
  • Plant Gene Expression Analysis
  • Carbon dioxide utilization in catalysis
  • CO2 Reduction Techniques and Catalysts
  • Catalysis and Oxidation Reactions
  • Electrocatalysts for Energy Conversion
  • Biodiesel Production and Applications
  • Microbial Metabolites in Food Biotechnology
  • Polymer crystallization and properties
  • Enzyme-mediated dye degradation
  • Zeolite Catalysis and Synthesis

École Polytechnique Fédérale de Lausanne
2015-2022

Massachusetts Institute of Technology
2020-2022

Catalytic Materials (United States)
2019

Charles Humbert 8
2019

University of Wisconsin–Madison
2015

University of Lausanne
2015

Formaldehyde protects and serves The lignin found in plants is a desirable renewable feedstock for fuels other useful compounds. Breaking down such strong, energy-dense polymer, however, requires pretreatment of plant biomass under harsh conditions. These steps often cause side reactions within the polymer itself, which lower overall yields monomers. Shuai et al. used formaldehyde during to block reactive groups that lead carbon-carbon linkages lignin. This simple step stabilized...

10.1126/science.aaf7810 article EN cc-by Science 2016-10-20

Here we report that γ-valerolactone (GVL), a biomass-derived solvent, can be used to facilitate the mild pretreatment of lignocellulosic biomass.

10.1039/c5gc02489g article EN Green Chemistry 2015-12-01

Hydrogenolysis of C–C bonds over Ru-based catalysts has emerged as a deconstruction strategy to convert single-use polyolefin waste liquid alkanes at relatively mild conditions, but this approach exhibits limitations, including methane formation resulting from terminal bond scission. In study, variety were investigated for the reductive polyethylene (PE) and polypropylene (PP) identify supports that promote nonterminal We found Ru nanoparticles supported on Brønsted-acidic zeolites with...

10.1021/acscatal.2c03596 article EN ACS Catalysis 2022-10-31

Abstract The direct partial oxidation of methane to methanol promises an energy‐efficient and environmental‐friendly utilization natural gas. Unfortunately, current technologies confront a grand challenge in catalysis, particularly the context distributed sources. Research has been focused on design homogenous heterogenous catalysts improve activation under thermal electrochemical conditions. However, intrinsic relationship between systems not exploited yet. This review intends bridge...

10.1002/aenm.202002154 article EN Advanced Energy Materials 2020-09-27

By using a quantitative HSQC-NMR method to measure chemical functionalities within the structure of isolated lignin samples, lignin's upgradability can be very precisely predicted.

10.1039/c9sc02088h article EN cc-by-nc Chemical Science 2019-01-01

Abstract We recently reported a nonenzymatic biomass deconstruction process for producing carbohydrates using homogeneous mixtures of γ‐valerolactone (GVL) and water as solvent. A key step in this is the separation GVL from aqueous phase, enabling recycling production concentrated carbohydrate solution. In study, we demonstrate that phenolic solvents— sec ‐butylphenol, nonylphenol, lignin‐derived propyl guaiacol—are effective at separating phase only small amounts solvent (0.5 g per original...

10.1002/cssc.201403418 article EN ChemSusChem 2015-03-17

We demonstrate a catalytic process for xylitol production based on the volatility and unique reactivity of diformylxylose (DFX), which can be produced at near theoretical yield from biomass and, contrary to xylose, easily purified by distillation. The apparent rate-limiting step was independent hydrogen pressure, studies showed slow evolution Pt/C catalyst that led tripling yield. In-depth characterization attributed this activity increase formation acidic carbon deposits, created acid sites...

10.1021/acssuschemeng.9b06456 article EN ACS Sustainable Chemistry & Engineering 2020-01-10
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