Featured Publication


The Scott Group Publishes New Findings in Science

Researchers develop an efficient, low-energy method for upcycling plastic waste into valuable molecules, creating a second life for waste plastics.

UCSB researchers have discovered a new catalytic route to transform waste plastic to valuable products via tandem hydrogenolysis/aromatization. Compared with conventional methods that require high temperatures (between 500 and 1000°C) to break down the polymer chains into smaller hydrocarbon molecules, the newly developed method converts polyethylene under relatively mild conditions (ca. 300°C) over a platinum on alumina (Pt/Al2O3) catalyst without the need for added hydrogen or solvent. Hydrogen generated in the reaction from aromatization serves to cut the polymer chains, making the overall transformation thermodynamically accessible despite the moderate reaction temperature. As a result, long-chain alkylaromatics are formed in high yields directly from waste hydrocarbon polymers. These products are widely used in solvents, paints, lubricants, detergents, pharmaceuticals, and many other industrial and consumer products.


Polyethylene Upcycling to Long-Chain Alkylaromatics by Tandem Hydrogenolysis/Aromatization

Fan Zhang, Manhao Zeng, Ryan D. Yappert, Jiakai Sun, Yu-Hsuan Lee, Anne M. LaPointe, Baron Peters, Mahdi M. Abu-Omar, Susannah L. Scott.

Science. 2020, 370, 437-441.



Complete Publication List

X-ray Absorption Spectroscopy Investigation into the Origins of Heterogeneity in Silica-Supported Dioxomonomolybdates

Li Li and Susannah L. Scott*

The Journal of Physical Chemistry C. 2021

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Chemical Upcycling of Polyethylene to Value-Added α,ω-Divinyl-Functionalized Oligomers

Manhao Zeng, Yu-Hsuan Lee, Garrett Strong, Anne M. LaPointe, Andrew L. Kocen, Zhiqiang Qu, Geoffrey W. Coates, Susannah L. Scott, and Mahdi M. Abu-Omar*

ACS Sustainable Chem. Eng. 2021

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First Principles Approach to Extracting Chemical Information from X-Ray Absorption Near-Edge Spectra of Ga-Containing Materials

Kyle Groden, Fernando D. Vila, Li Li, Simon Bare, Susannah Scott, Jean-Sabin McEwen

ChemRxiv. 2021

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Bioinspired methane oxidation in a zeolite

Susannah L. Scott

Science. 2021373, 277-278.

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P-Site Structural Diversity and Evolution in a Zeosil Catalyst

Sheetal K. Jain, Tarnuma Tabassum, Li Li, Limin Ren, Wei Fan, Michael Tsapatsis, Stavros Caratzoulas, Songi Han, and Susannah L. Scott.

J. Am. Chem. Soc. 2021143, 1968–1983.

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Efficient, Continuous N-Boc Deprotection of Amines Using Solid Acid Catalysts

Jing Wu, Chunming Zheng, Bryan Li, Joel M. Hawkins, Susannah L. Scott.

React. Chem. Eng., 2021, 6, 279 - 288.

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Polyethylene Upcycling to Long-Chain Alkylaromatics by Tandem Hydrogenolysis/Aromatization

Fan Zhang, Manhao Zeng, Ryan D. Yappert, Jiakai Sun, Yu-Hsuan Lee, Anne M. LaPointe, Baron Peters, Mahdi M. Abu-Omar, Susannah L. Scott.

Science, 2020, 370, 437-441.

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Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes

Matheus Dorneles de Mello, Gaurav Kumar, Tarnuma Tabassum, Sheetal K. Jain, Tso‐Hsuan Chen, Stavros Caratzoulas, Xinyu Li, Dionisios G. Vlachos, Songi‐I Han, Susannah L. Scott, Paul Dauenhauer, Michael Tsapatsis.

Angew. Chem. Int. Ed., 2020, 59, 13260–13266.

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Tuning Molecular Adsorption in SBA-15-Type Periodic Mesoporous Organosilicas by Systematic Variation of Their Surface Polarity

Hyunjin Moon, Songi Han, Susannah L. Scott.

Chem. Sci., 2020, 11, 3702-3712.

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Degradation Rates of Plastics in the Environment

Ali Chamas, Hyunjin Moon, Jiajia Zheng, Yang Qiu, Tarnuma Tabassum, Jun Hee Jang, Mahdi M. Abu-Omar, Susannah L. Scott, Sangwon Suh.

ACS Sustainable Chem. Eng., 2020, 8, 3494-3511.

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Structure-Performance Correlations of Cross-Linked Boronic Acid Polymers as Adsorbents for Recovery of Fructose from Glucose-Fructose Mixtures

Guido Schroer, Jeff Deischter, Tobias Zensen, Jan Kraus, Ann-Christin Pöppler, Long Qi, Susannah L. Scott, Irina Delidovich.

Green. Chem., 2020, 22, 550-562.

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Site-Averaged Kinetics for Catalysts on Amorphous Supports: an Importance Learning Algorithm

Craig A. Vandervelden, Salman A. Khan, Susannah L. Scott, Baron Peters.

React. Chem. Eng., 2020, 5, 77-86.

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Grafting Metal Complexes onto Amorphous Supports: from Elementary Steps to Catalyst Site Populations via Kernel Regression

Salman A. Khan, Craig A. Vandervelden, Susannah L. Scott, Baron Peters.

React. Chem. Eng., 2020, 5, 66-76.

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Unraveling the Dynamic Network in the Reactions of an Alkyl Aryl Ether Catalyzed by Ni/γ-Al2O3 in 2-Propanol

Long Qi, Ali Chamas, Zachary R. Jones, Eric D. Walter, David W. Hoyt, Nancy M. Washton, Susannah L. Scott.

J. Am. Chem. Soc., 2019, 141, 17370-17381.

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Direct, Selective Production of Aromatic Alcohols from Ethanol Using a Tailored Bifunctional Cobalt-Hydroxyapatite Catalyst

Qing-Nan Wang, Xue-Fei Weng, Bai-Chuan Zhou, Shao-Pei Lv, Shu Miao, Daliang Zhang, Yu Han, Susannah L. Scott, Ferdi Schüth, An-Hui Lu.

ACS Catal., 2019, 9, 7204-7216.

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Synthesis and Characterization of "Atlas-Sphere" Copper Nanoclusters: New Insights into the Reaction of Cu2+ with Thiols

Andrew W. Cook, Zachary R. Jones, Guang Wu, Simon J. Teat, Susannah L. Scott, Trevor W. Hayton.

Inorg. Chem., 2019, 58, 8739-8749.

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Upcycling Single-Use Polyethylene into High-Quality Liquid Products

Gokhan Celik, Robert M. Kennedy, Ryan A. Hackler, Magali Ferrandon, Akalanka Tennakoon, Smita Patnaik, Anne M. LaPointe, Salai C. Ammal, Andreas Heyden, Frédéric A. Perras, Marek Pruski, Susannah L. Scott, Kenneth R. Poeppelmeier, Aaron D. Sadow, and Massimiliano Delferro.

ACS Cent. Sci., 2019, 5 , 1795-1803.

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Glucose Isomerization and Epimerization over Metal-Organic Frameworks with Single-Site Active Centers

Qun-Xing Luo, Yuan-Bao Zhang,Long Qi, Susannah L. Scott.

ChemCatChem, 2019, 11, 1903-1909.

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High Temperature/Pressure MAS-NMR for the Study of Dynamic Processes in Mixed Phase Systems

Ali Chamas, Long Qi, Hardeep S. Mehta, Jesse A. Sears, Susannah L. Scott, Eric D. Walter, and David W. Hoyt.

Magn. Reson. Imaging, 2019, 56, 37-44.

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Do Mono-oxo Sites Exist in Silica-Supported Cr(VI) Materials? Reassessment of the Resonance Raman Spectra

Cristina Moisii, David Jeffcoat, Nathan Peek, Lambertus van de Burgt, Susannah L. Scott, and A. E. Stiegman.

J. Phys. Chem., 2018, 122, 17149-17160.

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Enhanced Metathesis Activity and Stability of Methyltrioxorhenium on a Mostly Amorphous Alumina: Role of the Local Grafting Environment

Fan Zhang, Kai C. Szeto, Mostafa Taoufik, Laurent Delevoye, Regis M. Gauvin, and Susannah L. Scott.

J. Am. Chem. Soc., 2018, 140, 13854-13868.

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A Strong Support Effect in Selective Propane Dehydrogenation Catalyzed by Ga(i-Bu)3 Grafted onto γ-Alumina and Silica

Kai C. Szeto, Zachary R. Jones, Nicolas Merle, Cesar Rios, Alessandro Gallo, Frederic Le Quemener, Laurent Delevoye, Regis M. Gauvin, Susannah L. Scott, and Mostafa Taoufik.

ACS Catal., 2018, 8, 7566-7577.

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Essential Elements of Collaboration: Understanding How Chemistry Graduate Students Experience Collaboration through International Research Visits

Anne E. Leak, Elizabeth Sciaky, Lubella Lenaburg, Julie A. Bianchini, and Susannah L. Scott.

J. Chem. Educ., 2018, 95, 749-757.

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A Reassessment of the Electronic Structure of Cr(VI) Sites Supported on Amorphous Silica and Implications for Cr Coordination Number

Nathan M. Peek, David B. Jeffcoat, Cristina Moisii, Lambertus van de Burgt, Salvatore Profeta, Susannah L. Scott, and Albert E. Stiegman.

J. Phys. Chem. C, 2018, 122, 4349-4358.

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Operando MAS-NMR Reaction Studies at High Temperatures and Pressures

Eric D. Walter, Long Qi, Ali Chamas, Hardeep S. Mehta, Jesse A. Sears, Susannah L. Scott, and David W. Hoyt.

J. Phys. Chem. C, 2018, 122, 8209-8215.

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