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Environment

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Displaying 251 - 275 of 1014

Electronic Structure, Pore Size Distribution, and Sorption Characterization of an unusual MOF, {[Ni(dpbz)][Ni(CN)4]}n, dpbz=1,4-bis(4-pyridyl)benzene

September 26, 2018
Author(s)
Winnie K. Wong-Ng, Izaak Williamson, Daniel W. Siderius, Jeffrey T. Culp, Yu-Sheng Chen, Lan Li, Matthew Lawson
The monoclinic (Ni(L)[Ni(CN)4] (L= 1,4-Bis(4-pyridyl) benzene) compound (nick-name Ni-dpbz) is a flexible metal organic framework (MOF) which assumes a pillared structure with layers defined by 2D Ni[Ni(CN)4]n nets and dpbz ligands as pillars. The

Evaluation of Formaldehyde Reference Material for Chamber Emission Testing

July 22, 2018
Author(s)
Dustin G. Poppendieck, Na Li, Wenhao Chen
Formaldehyde reference materials are being developed by the National Institute of Standards and Technology (NIST) for use in regulatory emission testing certification programs. Emission rates for a prototype formaldehyde reference material were determined

Simmering Sauces! Elevated Formaldehyde Concentrations from Gas Stove Burners

July 22, 2018
Author(s)
Dustin G. Poppendieck, Mengyan Gong
Formaldehyde is listed as a human carcinogen, and can be formed as a primary by-product during combustion processes. Past studies have not detected elevated formaldehyde concentrations from gas stoves, perhaps due to the time averaging nature of previous

Kinetic Mechanism of 2,3,3,3-Tetrafluoropropene (HFO-1234yf) Combustion

July 16, 2018
Author(s)
Valeri I. Babushok, Gregory T. Linteris
A kinetic model for 2,3,3,3-tetrafluoropropene (HFO-1234yf) high temperature oxidation and combustion is proposed. It is combined with the GRI-Mech-3.0 model, with the previously developed model for 2-bromo-3,3,3-trifluoropropene (2-BTP), and with the NIST

Materials and Processes for CO2 Capture, Conversion and Sequestration

May 26, 2018
Author(s)
Winnie K. Wong-Ng, Lan Li, Lawrence P. Cook, Kevin Huang
The book “Materials and Processes for CO2 Capture, Conversion and Sequestration (CCS)” which will be published by John Wiley & Sons, Inc., is a result of the symposium of the same title which took place in 2014 during the MS&T (Materials Science and

Synthesis and Synchrotron X-ray characterization of two 2D Hoffman related compounds [Ni(p-Xylylenediamine)nNi(CN)4] and [Ni(p-tetrafluoroxylylenediamine)nNi(CN)4]

April 24, 2018
Author(s)
Winnie K. Wong-Ng, Jeffrey T. Culp, Daniel W. Siderius, Yu-Sheng Chen
Synchrotron X-ray single crystal structure studies of two closed 2D Hofmann-type related compounds, [Ni(p-Xylyenediamine)n-tetracyanonickelate] (abbreviated as Ni-pXdam) and [Ni(tetrafluoro-p-Xylyenediamine)n-tetracyanonickelate] (abbreviated as Ni-pXdamF4

Measured In-situ Mass Absorption Spectra for Nine Forms of Highly-absorbing Carbonaceous Aerosol

April 23, 2018
Author(s)
Christopher D. Zangmeister, Rian You, Elizabeth M. Lunny, Arne Jacobson, Mitchio Okumura, Michael R. Zachariah, James G. Radney
Mass absorption coefficient spectra were measured between λ = 500 nm and 840 nm for nine forms of highly-absorbing carbonaceous aerosol: five samples generated from gas-, liquid- and solid- fueled flames; spark-discharge fullerene soot; graphene and

NIST Standards for Measurement, Instrument Calibration, and Quantification of Gaseous Atmospheric Species

March 2, 2018
Author(s)
George C. Rhoderick, Michael E. Kelley, Walter R. Miller Jr., James E. Norris, Jennifer Carney, Lyn Gameson, Christina Cecelski, Cassie Goodman, Abneesh Srivastava, Joseph Hodges
There are many gas species present in the atmosphere that are associated with the earth’s climate. These compounds absorb and emit radiation, a process which is the fundamental cause of the greenhouse effect. The major greenhouse gases in the earth’s