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automobile catalyst

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The fate of PGE from <b>automobile</b> <b>catalysts</b> in the urban environment. Concent...
in > Elements
Published: 01 August 2008
FIGURE 2 The fate of PGE from automobile catalysts in the urban environment. Concentration ranges typically found for selected compartments (compiled from general literature data) are shown. Equivalent units: 1 ng g -1 = 1 ppb; 1 ng l -1 = 1 ppt
Journal Article
Journal: Elements
Published: 01 August 2008
Elements (2008) 4 (4): 259-263.
...FIGURE 2 The fate of PGE from automobile catalysts in the urban environment. Concentration ranges typically found for selected compartments (compiled from general literature data) are shown. Equivalent units: 1 ng g -1 = 1 ppb; 1 ng l -1 = 1 ppt ...
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Series: Clay Minerals Society Special Publication
Published: 01 January 1993
DOI: 10.1346/CMS-SP-1.3
EISBN: 9781881208389
... systems silanes act as coupling agents giving a strong covalent bond between the kaolin surface and the polymer, thereby offering maximum reinforcement to the composite. Where kaolin use involves reconstitution, as in catalyst supports, cement, fiber glass, and for the production of aluminum compounds...
Journal Article
Published: 01 February 2008
Geochemistry: Exploration, Environment, Analysis (2008) 8 (1): 31-40.
...-residual soils from flowerbeds in the urban areas of Avellino, Benevento and Caserta (characterized by low population density, LPD), and in Salerno (a city with high population and high automobile traffic densities). The soils (<100-mesh size fraction, i.e. <150 μm) were analysed for Pt, Pd and Rh...
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Journal Article
Published: 01 February 2008
Geochemistry: Exploration, Environment, Analysis (2008) 8 (1): 91-101.
... mainly as fine particulate material from the abrasion and deterioration of the catalyst surface, and these particles are deposited as dust on roads and adjacent vegetation and surfaces ( Kummerer et al . 1999 ). The annual worldwide emission of Pt, arising solely from automobile catalytic converters...
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Journal Article
Journal: Economic Geology
Published: 01 June 2006
Economic Geology (2006) 101 (4): 904-905.
..., high-strength magnets; Eu in color cathode-ray tubes and liquid-crystal displays; Er in fiber-optic cables; and Gd and heavy REE in magnetic refrigeration units. The REE are also being used as fluid cracking catalysts by the petroleum industry, in catalytic converters for automobiles, and in energy...
Journal Article
Published: 01 November 2018
Reviews in Mineralogy and Geochemistry (2018) 84 (1): 499-514.
... a thermostable substrate, maintaining active surface area with a high degree of catalyst thermal and chemical stability. Frequently encountered catalyst support materials include Al 2 O 3 , SiO 2 , activated carbon, TiO 2 , and ZnO ( Mouljin et al. 1993 ). Three-way catalytic converters in automobiles...
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Journal Article
Published: 01 February 2005
Geochemistry: Exploration, Environment, Analysis (2005) 5 (1): 3-10.
... , A. , Alt , F. , First report on the uptake of automobile catalyst emitted palladium by European eels ( Anguilla anguilla ) following experimental exposure to road dust . Environmental Pollution , 113 2001 . 341 – 435 . Zereini , F. , Wiseman , C. , Alt , F. , Messerschmidt , J...
FIGURES
Journal Article
Journal: Elements
Published: 01 August 2008
Elements (2008) 4 (4): 227-232.
... oxidation of automobile exhaust gas. This is in addition to the amounts produced for jewelry and other industrial processes (mostly catalysis related) involving one or more of the platinum-group metals (PGE: Os, Ir, Ru, Rh, Pt, Pd), totaling some 7 million ounces, worth ∼US$10 billion 1 . How does...
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Journal Article
Journal: Elements
Published: 01 August 2015
Elements (2015) 11 (4): 247-252.
... organic aerosols, or “tholins,” produced in the upper atmosphere of Saturn's moon Titan and that contribute to its characteristic reddish haze ( F ig . 1A, B ). These carbon nitride semiconductors provide redox catalysts that are being developed for sustainable chemical processing ( Thomas et al. 2008...
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Journal Article
Journal: Elements
Published: 01 August 2012
Elements (2012) 8 (4): 269-273.
... and proppant production. Honeycomb catalyst bodies are cast from melted kaolin and are used in catalytic converters for automobiles. F igure 3 Muscovite grid insulators and separators in a vacuum tube. P hoto : D avid L ondon Finely milled feldspar (4–12 μm) is added to paint as a filler...
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Journal Article
Journal: Elements
Published: 01 December 2018
Elements (2018) 14 (6): 403-408.
..., lasers and permanent magnets), aerospace (radar and electrical systems), and the automobile industry (catalysts for petroleum refining). Unfortunately, the scarcity of data has hampered the quantification of how anthropogenically released elements affect their environmental concentration, fate...
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Journal Article
Published: 01 October 2018
Geochemical Perspectives (2018) 7 (2): 182-188.
... depends on whether Adkins can find a way to efficiently recycle the catalyst, carbonic anhydrase. Without it, the reaction between CO 2 -acidified seawater and limestone would be far too slow. However, as carbonic anhydrase is very expensive, unless it can be recycled many thousands of times, the scheme...
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Journal Article
Journal: Elements
Published: 01 April 2009
Elements (2009) 5 (2): 111-116.
... are widely available and relatively inexpensive solid sources of protons. They have been used to manufacture industrially significant products such as adsorbents, catalysts, and catalyst supports. Acid activation creates the so-called bleaching earths, which are clays suitable for a range of decolorizing...
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Journal Article
Journal: Elements
Published: 01 September 2005
Elements (2005) 1 (4): 193-197.
... such as strength, malleability, and conductivity of heat and electricity. Some metals exhibit magnetic properties and some are excellent conductors of electricity. Metals are important components of our homes, automobiles, appliances, tools, computers and other electronic devices, and are essential to our...
FIGURES
Journal Article
Journal: Elements
Published: 01 December 2008
Elements (2008) 4 (6): 389-394.
.... Distinctions are commonly made between anthropogenic and natural nanoparticles, both of which are subdivided into primary and secondary ( F ig . 4 ). Important primary anthropogenic sources include automobiles, incinerators, smelters, and power plants, as well as commercial products such as carbon nanotubes...
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Journal Article
Journal: The Leading Edge
Published: 01 January 2006
The Leading Edge (2006) 25 (1): 96-99.
... hydrogen from escaping from a container. A complex set of seals, gaskets, and valves is needed, and still liquid hydrogen tanks boil off about three percent of the stored hydrogen a day. All of these hurdles must be overcome before there can be widespread use. For example, platinum used as a catalyst...
Journal Article
Journal: Elements
Published: 01 June 2007
Elements (2007) 3 (3): 171-178.
.... In addition, there are technological improvements in end use that would contribute greatly to any emissions reduction effort by making large jumps in energy efficiency. For example, if better batteries for electric automobiles can be developed that are economical and reliable, and if the technology is broadly...
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Journal Article
Published: 01 January 2001
Reviews in Mineralogy and Geochemistry (2001) 45 (1): 589-617.
... of waste-heat adsorption cooling systems is a major factor in the acceptability of the use of natural zeolites for air conditioning by the automobile industry. The input energy during the activation process of a zeolite bed is divided in two parts; one part is used to raise the temperature of the dry...
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Series: Reviews in Economic Geology
Published: 01 January 2016
DOI: 10.5382/Rev.18.04
EISBN: 9781629490922
...: audio systems (mostly Ce), glass additives (Ce and La), nickel metal hydride batteries for computers (Nd, Pr, Dy, and Tb), catalysts (predominantly La), automobiles (Nd and Pr), and wind turbines (Nd and Pr). Together, the consumption of REEs in these nine product sectors constitutes nearly 88...
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