ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Inorganic Chemistry  (752)
  • Chemical Engineering  (368)
  • 1970-1974  (1,120)
  • 1972  (1,120)
Collection
Keywords
Publisher
Years
  • 1970-1974  (1,120)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Fixed bed desorption behavior of gases with non-linear equilibria: Part I. Dilute, one component, isothermal systems (1972)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 18 (1972), S. 1139-1147 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Generalized depletion curves for desorption (and breakthrough curves for adsorption) were calculated for a system characterized by the Langmuirtype equilibria and controlled by a film type rate model. The depletion points generally appear sooner than the corresponding breakthrough points, and the desorption profiles are significantly broader than the corresponding adsorption curves. These phenomena may be best explained in terms of the prevailing driving forces. The effects of adsorbate properties and operating variables (inlet composition and flow rate) were established and experimentally substantiated.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690180609
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The effect of angular light intensity distribution on the performance of tubular flow photoreactors (1972)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 18 (1972), S. 1189-1195 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The angular light intensity distribution (ALID) at the surface of several elliptical reflector-photoreactors was determined experimentally using the optically dense potassium ferrioxalate actinometer. The distributions were well correlated by the model \documentclass{article}\pagestyle{empty}\begin{document}$$I_w (\theta) = \overline {I_w } [1 + \beta \cos \theta]$$\end{document} The correlating parameter β was a function of the ratio of the light source and photoreactor tube diameters.The theoretical effect of ALID on reactor performance was determined for a reaction which proceeded via direct absorption by the reactant. The ALID effect on performance was most pronounced under conditions of high optical densities and low radial mixing rates of reactant.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690180616
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Über die Cycloacylierung von Adamantyl-(1)-cyanamid mit bifunktionellen Carbonsäurechloriden und einige Folgereaktionen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1714-1717 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cycloacylation of 1-(Cyanoamino)adamantane with Bifunctional Acyl Chlorides and some Subsequent ReactionsAddition of oxalyl chloride to 1-(cyanoamino)adamantane (1) gave the dichloro compound 2. Hydrolysis of 2 yielded 1-(1-adamantyl)parabanic acid (3), and reaction of 2 with bifunctional nucleophilic agents afforded the spiro-compounds 6-9. Elimination of HCl from 2 followed by treatment with sec. amines gave 1-(1-adamantyl)-2-amino-2-imidazoline-4.5-diones 11a-e. Reaction of 1.1-cyclobutanedicarboxylic acid dichloride with 1 and subsequent hydrolysis led to the formation of the barbituric acid derivative 13.
    Notes: Durch Addition von Oxalylchlorid an Adamantyl-(1)-cyanamid (1) wurde die Dichlorverbindung 2 erhalten, die hydrolytisch in 1-[Adamantyl-(1)]-parabansäure (3) sowie mit bifunktionellen nucleophilen Reaktionspartnern in die Spiro-Verbindungen 6-9 übergeführt wurde. Durch Dehydrohalogenierung und Umsetzung mit sek. Aminen wurden aus 2 die 2-Amino-1-[adamantyl-(1)]-δ2-imidazolindione-(4.5) 11a-e erhalten. Nach Addition von Cyclobutan-dicarbonsäure-(1.1)-dichlorid an 1 und Hydrolyse wurde das Barbitursäure-derivat 13 isoliert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050528
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Hydroxylamin-Derivate. IL. Darstellung und Cyclisierung von substituierten 1- und 2-Hydroxy-guanidinen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1709-1713 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydroxylamine Derivatives, IL. Preparation and Cyclization of Substituted 1- and 2-HydroxyguanidinesAddition of substituted hydroxylamines to carbodiimides yields substituted 2- or 1-hydroxy-guanidines (1 or 4). In some cases C-(aminooxy)formamidines (7) and an alkoxybiguanide (9) are obtained. 1 and 4 react with chloroformic acid esters to give substituted 3-amino-δ2-1.2.4-oxadiazolin-5-ones (2) and 3-imino-1.2.4-oxadiazolidin-5-ones (5), respectively. Reaction of 1 and 4 with carbonimidoyl dichlorides leads to derivatives of 3-amino-5-imino-δ2-1.2.4-oxadiazoline (3) and of 3.5-diimino-1.2.4-oxadiazolidine (6), respectively.
    Notes: Die Addition von (subst.) Hydroxylaminen an Carbodiimide führt zu Derivaten des 2- bzw. 1-Hydroxy-guanidins (1 bzw. 4); in einigen Fällen entstanden C-Aminooxy-formamidine (7) sowie ein Alkoxy-biguanid (9), 1 und 4 wurden mit Chlorameisensäureestern in subst. 3-Amino-δ2-1.2.4-oxadiazolinone-(5) (2) bzw. 3-Imino-1.2.4-oxadiazolidinone-(5) (5) und mit Isocyaniddichloriden in die entsprechenden 3-Amino-5-imino- bzw. 3.5-Diimino-Derivate (3 bzw. 6) übergeführt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050527
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Zum Mechanismus der Wolff-Umlagerung (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1875-1886 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Mechanism of the Wolff RearrangementThe thermal and electron impact induced Wolff rearrangement of [carbonyl-13C]azibenzil (6) occurs without migration of the labelling. In contrast in the photochemically performed reaction a part of the label is found in the tertiary carbon atom of the resulting diphenylacetic acid, which proves the formation of an oxirene intermediate. The amount of the oxirene is smaller when the water concentration is increased. The participation of the oxirene intermediate is discussed on the basis of two alternative reaction mechanisms.
    Notes: Bei der thermischen und elektronenstoß-induzierten Wolff-Umlagerung von [Carbonyl-13C]-Azibenzil (6) bleibt die Markierung in der Carbonylgruppe fixiert. Im Gegensatz dazu gelangt im photochemischen Fall ein Teil der Markierung in das tertiäre C-Atom der resultierenden Diphenylessigsäure, wodurch der Weg über ein Oxiren bewiesen wird. Dieser Anteil nimmt bei höherer Wasserkonzentration ab. Das Auftreten der symmetrischen Oxiren-Zwischenstufe wird an Hand von zwei alternativen Reaktionsmechanismen diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050610
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Dispersed phase reactor model for predicting conversion and mixing effects (1972)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 18 (1972), S. 1268-1271 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690180631
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Notiz über den Phenothiazin- und Carbazolringschluß von 2.7-Bis-β-naphthylamino-naphthalin (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3495-3499 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721051038
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Fragmentierungsreaktionen an Carbonylverbindungen mit β-ständigen elektronegativen Substituenten, XXI Cyan-cyclobutane aus Tosyloxy-olefinen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1053-1061 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Fragmentation Reactions of Carbonyl Compounds with Electronegative β-Substituents, XXI Cyanocyclobutanes from TosyloxyolefinsTosyloxyolefins 6-10 are prepared from the β-tosyloxyaldehydes 1-3 by Knoevenagel condensation with malononitrile or ethyl cyanoacetate. Reaction with potassium alkoxide produces 2-alkoxy-1.1-dicyano and -1-cyano-1-alkoxycarbonylcyclobutanes (11-17). Reduction with boron hydrides leads to 1.1-dicyano, 1-cyano-1-alkoxycarbonyl and 1-carbamoyl-1-cyanocyclobutanes (19-25) in good yields.
    Notes: Durch Knoevenagel-Kondensation mit Malodinitril bzw. Cyanessigester werden aus den β-Tosyloxy-aldehyden 1-3 die Tosyloxy-olefine 6-10 dargestellt. Bei der Umsetzung mit Kaliumalkoholat werden daraus 2-Alkoxy-1.1-dicyan- und -1-alkoxycarbonyl-1-cyan-cyclo-butane (11-17) erhalten. Die Reaktion mit Borhydriden führt in ebenfalls guter Ausbeute zu 1.1-Dicyan-, 1-Alkoxycarbonyl-1-cyan- und 1-Carbamoyl-1-cyan-cyclobutanen (19-25).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050337
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Secondary nucleation in a class II system: Ammonium sulfate-water (1972)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 18 (1972), S. 421-429 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Secondary nucleation at low supersaturation for the ammonium sulfate-water system was studied using a seeded continuous crystallizer. Counter size distribution measurements in the subsieve size range indicated that nuclei are formed by microattrition of seed crystals and that the growth rate of the nuclei is very small. Nucleaion rate was correlated with the characteristics of the secondary environment. The results of this correlation, which shows strong dependence on stirring rate and essentially linear dependence on solids concentration, indicate that secondary nuclei are generated by collisions of the seed crystals with the impeller blades.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690180227
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Berichtigungen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3758-3758 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721051131
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...