2009 journal article

In-situ NMR studies of isobutane activation and exchange in zeolite beta

SOLID STATE NUCLEAR MAGNETIC RESONANCE, 35(2), 100–103.

By: M. Truitt n & J. White*

author keywords: Isobutane; Alkane activation; C-H bond activation; In-situ NMR; Catalysis; Zeolite; Mechanism
MeSH headings : Butanes / analysis; Butanes / chemistry; Computer Simulation; Magnetic Resonance Spectroscopy / methods; Models, Chemical; Models, Molecular; Molecular Conformation; Zeolites / analysis; Zeolites / chemistry
TL;DR: Estimation of true activation energies using heat of adsorption data from the literature combined with the experimentally measured apparent E(a) suggests that the true activation barrier differs by only 6-7kJ/mole in the two catalysts. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 review

Heterogeneous catalysis in solid acids

[Review of ]. Progress in Nuclear Magnetic Resonance Spectroscopy, 51(2), 139–154.

By: J. White & M. Truitt

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Weak hydrogen bonding can initiate alkane C-H bond activation in acidic zeolites

JOURNAL OF PHYSICAL CHEMISTRY B, 110(42), 20762–20764.

By: L. Sremaniak n, J. Whitten n, M. Truitt n & J. White n

TL;DR: The mechanism described in this contribution demonstrates that weak C-H to O hydrogen bonding leads to complexes at the zeolite acid site that can facilitate C- H bond activation. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2005 journal article

Factors that allow polyolefins to form miscible blends: polyisobutylene and head-to-head polypropylene

MACROMOLECULES, 38(25), 10466–10471.

By: J. Wolak n & J. White n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Morphology and dynamics of the poly(epsilon-caprolactone)-b-poly(L-lactide) diblock copolymer and its inclusion compound with alpha-cyclodextrin: A solid-state C-13 NMR study

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 43(15), 2086–2096.

By: F. Porbeni n, I. Shin*, X. Shuai*, X. Wang n, J. White n, X. Jia n, A. Tonelli n

author keywords: biodegradable; cyclodextrin inclusion compound; diblock PCL-b-PLLA copolymer; inclusion chemistry; molecular dynamics; solid-state C-13 NMR
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Two-dimensional spin-diffusion NMR reveals differential mixing in biodegradable polymer blends

MACROMOLECULES, 38(7), 2775–2780.

By: X. Jia n, X. Wang n, A. Tonelli n & J. White n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 review

Controlling the polymorphic behaviors of semicrystalline polymers with cyclodextrins

[Review of ]. CRYSTAL GROWTH & DESIGN, 4(6), 1431–1441.

By: C. Rusa n, M. Wei n, T. Bullions n, M. Rusa n, M. Gomez n, F. Porbeni n, X. Wang n, I. Shin n ...

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Identification of an adsorption complex between an alkane and zeolite active sites

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 126(36), 11144–11145.

By: M. Truitt n, S. Toporek n, R. Rovira-Hernandez n, K. Hatcher n & J. White n

TL;DR: Direct observation of the Bronsted acid site signal in an active zeolite catalyst following adsorption of stoichiometric quantities of isobutane reveals the presence of a specific Adsorption complex, proposed as a route to C-H bond activation in solid acids. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Length scales which perturb chain packing in amorphous polymers

MACROMOLECULES, 37(12), 4573–4579.

By: M. Wachowicz n, J. Wolak n, H. Gracz n, E. Stejskal n, S. Jurga n, E. McCord n, J. White n

Source: Web Of Science
Added: August 6, 2018

2003 journal article

Dynamic disorder and conformer exchange in the crystalline monomer of polycarbonate

JOURNAL OF PHYSICAL CHEMISTRY B, 107(48), 13293–13299.

By: J. Wolak n, J. Knutson n, J. Martin n, P. Boyle n, A. Sargent n & J. White n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Independent calibration of H-1 spin-diffusion coefficients in amorphous polymers by intramolecular polarization transfer

MACROMOLECULES, 36(3), 712–718.

By: X. Jia n, J. Wolak n, X. Wang n & J. White n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Polyolefin miscibility: Solid-state NMR investigation of phase behavior in saturated hydrocarbon blends

MACROMOLECULES, 36(13), 4844–4850.

By: J. Wolak*, X. Jia*, H. Gracz*, E. Stejskal*, J. White*, M. Wachowicz, S. Jurga

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2003 journal article

The glass transition time scale and configurational entropy in polymers: An experimental molecular view

Journal of the American Chemical Society, 125(45), 13660–13661.

By: J. Wolak, X. Jia & J. White

Source: NC State University Libraries
Added: August 6, 2018

2002 personal communication

Intramonomer polarization transfer: Calibrating spin diffusion coefficients in mobile polyolefins and their blends

By: X. Wang & J. White

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Manipulation of nylon-6 crystal structures with its alpha-cyclodextrin inclusion complex

MACROMOLECULES, 35(21), 8039–8044.

By: M. Wei n, W. Davis n, B. Urban n, Y. Song n, F. Porbeni n, X. Wang n, J. White n, C. Balik n ...

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Quantitative investigations of acidity, and transient acidity, in zeolites and molecular sieves

Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces & Biophysical, 106(19), 4941–4946.

By: X. Wang, J. Coleman, X. Jia & J. White

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Reorganization of the structures, morphologies, and conformations of bulk polymers via coalescence from polymer-cyclodextrin inclusion compounds

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 40(10), 992–1012.

By: T. Bullions n, M. Wei n, F. Porbeni n, M. Gerber n, J. Peet n, M. Balik n, J. White n, A. Tonelli n

author keywords: poly(ethylene terephthalate); polycarbonate; host-guest systems; inclusion chemistry; solid state structure; conformational analysis
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Structural investigations of solid proteins at natural abundance using 2D multiple-pulse NMR

MACROMOLECULES, 35(7), 2633–2639.

By: J. White n & X. Wang n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

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