P. J. Kwiatek

Direct Characterization of Kerogen by X-ray and Solid-State ¹³C Nuclear Magnetic Resonance Methods

S. R. Kelemen, Mobae Afeworki, Martin L. Gorbaty et al. · Energy & Fuels · 2007 · 489 citations

Natural Sciences, Chemistry, Materials Science +17

Quantification of Nitrogen Forms in Argonne Premium Coals

S. R. Kelemen, Martin L. Gorbaty, P. J. Kwiatek · Energy & Fuels · 1994 · 299 citations

Engineering, Chemistry, Mining Engineering +8

XPS and ¹⁵N NMR Study of Nitrogen Forms in Carbonaceous Solids

S. R. Kelemen, Mobae Afeworki, Martin L. Gorbaty et al. · Energy & Fuels · 2002 · 194 citations

Natural Sciences, Chemistry, Materials Science +13

Characterization of solid bitumens originating from thermal chemical alteration and thermochemical sulfate reduction

S. R. Kelemen, Clifford C. Walters, P. J. Kwiatek et al. · Geochimica et Cosmochimica Acta · 2010 · 129 citations

Natural Sciences, Materials Engineering, Materials Science +16

Nitrogen Transformations in Coal during Pyrolysis

S. R. Kelemen, Martin L. Gorbaty, P. J. Kwiatek et al. · Energy & Fuels · 1998 · 122 citations

Natural Sciences, Chemistry, Materials Science +13