ExxonMobil

About: ExxonMobil is a company organization based out in Irving, Texas, United States. It is known for research contribution in the topics: Catalysis & Polymer. The organization has 16969 authors who have published 23758 publications receiving 535713 citations. The organization is also known as: Exxon Mobil Corporation & Exxon Mobil Corp..

Thermoplastic olefin compositions

Abstract: The invention relates to novel Thermoplastic Olefin compositions comprising polypropylene, and ethylene-alpha olefin elastomer and a compatibilizer comprising an ethylene-propylene copolymer having a propylene content of greater than 80 weight percent. The ethylene-propylene copolymer compatibilizer imparts a greater degree of compatibility between the polypropylene and elastomer phases yielding improved physical properties.

Cometary collisions on the Moon and Mercury

Abstract: Unusual swirl patterns of bright and dark material on the moon and Mercury are proposed to be remnants of collisions with gas/dust-rich regions within a cometary coma. This interpretation provides important new clues for understanding cometary fine structure, impact effects of low-density material, and the origin of certain pronounced magnetic anomalies.

Structure of p ( 2 × 2 ) and c ( 2 × 2 ) Oxygen on Ni(100): A Surface Extended-X-Ray Absorption Fine-Structure Study

Abstract: In contrast to recent theoretical electronic structure calculations and analysis of electron energy-loss (ELS) spectra, surface extended-x-ray-absorption fine-structure measurements establish the local structural equivalence of $p(2\ifmmode\times\else\texttimes\fi{}2)$ and $c(2\ifmmode\times\else\texttimes\fi{}2)$ oxygen on Ni(100). In both cases the oxygen atoms chemisorb in the fourfold hollow site with an O-Ni bond length of 1.96 \ifmmode\pm\else\textpm\fi{} 0.03 \AA{} (i.e., ${d}_{\ensuremath{\perp}}=0.86\ifmmode\pm\else\textpm\fi{}0.07$ \AA{}). In the light of the present results the large ELS frequency shift (14 meV) between the $p(2\ifmmode\times\else\texttimes\fi{}2)$ and $c(2\ifmmode\times\else\texttimes\fi{}2)$ phases remains a puzzle.