De Kalin


W.. de Klein and E. C. Kooyman,/ Cata/. 4, 626 (1965).  [c.347]

E. F. Rasmussen, Dy Kiln Operators Manual, Agriculture Handbook 188, U.S. Department of Agriculture, U.S. Government Printing Office, Washington, D.C., 1961.  [c.335]

Refractory-Wall Furnaces. Many types of refractory-wall furnaces are used for melting or heat treatment of metals, at temperatures ranging from less than 540°C to as high as 1760°C, such as ceramic and glass kilns and furnaces, ovens and dryers operating from 50°C to 600°C, and stills and retorts (7) (see Clays). Heaters can be directly fired when the products of combustion do not seriously affect the process stream (see Petroleum). Indirect heaters use heat exchangers to transfer heat to the process medium. Incinerators are special furnaces designed to consume waste products that must be disposed of without creating poUution problems. Trash or soHd waste incinerators usually employ a grate or rotating kiln to accomplish mixing of the air with the waste for combustion.  [c.146]

DE Pat. 2,437,219 (1974), H. Stetter and H. Kuhlmann (to Bayer AG).  [c.506]

Plastics" in ECT 1st ed., VoL 10, pp. 798—818, by G. M. Kline, National Bureau of Standards, U.S. Dept, of Commerce "Plastics Technology" in ECT 2nd ed., Vol 15, pp. 790—811, by R. B. Seymour, University of Houston "Plastics Processing" in ECT 3rd ed., Vol 18, pp. 184—206, by P. N. Richardson, E. I. du Pont de Nemours Co., Inc.  [c.145]

W. Klyne and P. B. D. de la Mare, Progress in Stereochemistry, Vol. 2, Academic Press, Inc., New York, 1958, p. 42.  [c.276]

Sawdust is impregnated with concentrated phosphoric acid and fed to a rotary kiln, where it is dried, carbonized, and activated at a moderate temperature. To comply with environmental pollution regulations, the kiln off-gases are treated before discharge to the atmosphere. The char is washed with water to remove the acid from the carbon, and the carbon is separated from the slurry. The filtrate is then passed to an acid recovery unit. Some manufacturing plants do not recycle all the acid but use a part of it to manufacture fertilizer in an allied plant. If necessary, the pH of the activated carbon is adjusted, and the product is dried. The dry product is screened and classified into the size range required for specific granular carbon applications. Carbon yields as high as 50% by weight of the wood precursor have been reported (26).  [c.531]

Wet-Process Kilns. In a long wet-process kiln, the slurry iatroduced iato the feed end first undergoes simultaneous heating and dryiag. The refractory lining is alternately heated by the gases when exposed and cooled by the slurry when immersed thus the lining serves to transfer heat, as do the gases themselves. Large quantities of water must be evaporated, thus most wet kilns are equipped with chaias to maximize heat transfer from the gases to the slurry. Large, dense chaia systems permit energy saviags of up to 1.7 MJ /kg (731 Btu lb) clinker ia exceptionally favorable situations (53). After most of the moisture has been evaporated, nodules, which stiU contaia combiaed water, move down the kiln and are gradually heated to about 550°C. As the charge leaves the burning zone it begias to cool, and tricalcium aluminate and magnesia crystallize from the melt and the Hquid phase finally solidifies to produce the ferrite phase. The material drops iato the clinker cooler for further cooling by air.  [c.293]

The finer particle fractions of ka olin are typicaHy smaH platelets having a roughly hexagonal shape. The platey nature of the particles is one of the characteristics of ka olin that makes it so valuable as a paper coating pigment because in the coating operation the particles orient themselves paraHel to the fiber substrate to give the desired smooth surface. The coarser particles, at least from the middle Georgia deposits, consist of stacks of loosely bound platelets, commonly described as booklets (10). These can be selectively ground to give delaminated kaolin products of quite different characteristics than those of the naturaHy occurring material (11). The larger diameter but thin platelets that are obtained by delamination are especiaHy valuable in obtaining good coated paper quaHty even at very light coating weights. Delamination also improves brightness because the resulting particles are better light scatterers and do a better job at obscuring discolored impurities. When used as filler pigments, the large diameter platey delaminated particles are retained weU in the sheet and improve its optical properties.  [c.207]

SP Weiner, PA Kollman, DA Case, UC Singh, C Ghio, G Alagona, S Profeta, P Weiner. J Am Chem Soc 106 765-784, 1984.  [c.36]

DA Pearlman, PA Kollman. Biopolymers 29 1193-1209, 1990.  [c.462]

SP Weiner, PA Kollman, DA Case, UC Singh, C Ghio, G Alagona, S Profeta, P Weiner. J Am Chem Soc 106 765-784, 1984.  [c.462]

SJ Weiner, PA Kollman, DT Nguyen, DA Case. J Comput Chem 7 230-252, 1986.  [c.462]

GI Martyna, DI Tobias, ML Klein. I Chem Phys 101 4177-4199, 1994.  [c.463]

DI Tobias, K Tu, ML Klein. Cuit Opm Colloid Int Sci 2 15-26, 1997.  [c.495]

K Tu, ML Klein, DI Tobias. Biophys I 75 2147-2156, 1998.  [c.495]

K Tu, DI Tobias, ML Klein. I Phys Chem 99 10035-10042, 1995.  [c.495]

DI Tobias, K Tu, ML Klein. I Chim Phys Phys-Chim Biol 94 1482-1502, 1997.  [c.495]

In his 1878 abstract, Gibbs formulated two alternative but equivalent forms of the criterion for thermodynamic equilibrium For the equilibrium of any isolated system it is necessary and sufficient that in all possible variations of the state of the system which do not alter its energy (entropy), the variation of its entropy (energy) shall either vanish or be negative (positive) . Gibbs moved on immediately to apply this criterion to the issue of chemical equilibrium between phases. According to Klein, the result of this work was described by Wilhelm Ostwald as determining the form and content of chemistry for a century to come, and by Henri Le Chatelier as comparable in its importance for chemistry with that of Antoine Lavoisier (the co-discoverer of oxygen). From his criterion, Gibbs derived a corollary of general validity, the phase rule, formulated as 8 = n -1- 2 - r. This specifies the number of independent variations 8 (usually called degrees of freedom ) in a system of r coexistent phases containing n independent chemical components. The phase rule, when at last it became widely known, had a definitive effect on the understanding and determination of phase, or equilibrium, diagrams.  [c.76]

The Kiliani-Fischer synthesis pro ceeds by nucleophilic addition of HCN to an aldose followed by con version of the cyano group to an al dehyde A mixture of stereoisomers results the two aldoses are epi meric at C 2 Section 25 20 de scribes the modern version of the Kiliani-Fischer synthesis The example at the right illus trates the classical version  [c.1063]

Jarl L. Opgr de C. J. Dobratz Edward Brown Jason Liang Gregory S. Conn Kalama Chemical, Inc.  [c.36]

DA Pearlman, DA Case, JW Caldwell, WS Ross, TE Cheatham, S Debolt, D Perguson, G Seibel, P Kollman. Comput Phys Commun 91 1-41, 1995.  [c.35]

WS Ross, CC Hardin, I Tmoco Jr, SN Rao, DA Pearlman, PA Kollman. Biopolymers 28 1939-1957, 1989.  [c.462]

Fig. 1-2. A pottery kiln. Source Cipriano Piccolpasso, "The Three Books of the Potters s Art," fol. 35C, 1550. Translated by B. Rackham and A. Van de Put, Victoria and Albert Museum, London, 1934, Fig. 1-2. A pottery kiln. Source Cipriano Piccolpasso, "The Three Books of the Potters s Art," fol. 35C, 1550. Translated by B. Rackham and A. Van de Put, Victoria and Albert Museum, London, 1934,
Eegonine is readily esterified in presence of hydrogen chloride, and this way various alkylecgonines have been prepared. The most impKartai of these is the methyl ester, b.p. 177°/15 mm., which according to de Jong occurs in Java coca. It was prepared by Einhom and Klein in 1888 i the hydrochloride crystallising, with 1 HjO, in colourless prisms, m.p. 21  [c.96]


See pages that mention the term De Kalin : [c.104]    [c.2218]    [c.4]    [c.153]    [c.183]    [c.72]    [c.392]    [c.388]    [c.386]    [c.195]    [c.150]    [c.461]    [c.75]    [c.53]    [c.104]    [c.199]    [c.660]    [c.104]    [c.345]   
Handbook of hazardous chemical properties (2000) -- [ c.104 ]