Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Processes heterogenic

Unlike incompatible heterogeneous blends of elastomer-elastomer, elastomer-plastic, and plastic-plastic, the reactively processed heterogeneous blends are expected to develop a variable extent of chemical interaction. For this reason the material properties, interfacial properties, and phase morphology of reactively processed blends would differ significantly from heterogeneous mixtures. [Pg.467]

In all metallurgical processing, heterogeneous reactions and the approach to equilibrium between two or more phases are of great importance. Much of the information on equilibrium is contained in the equilibrium constant which, as mentioned earlier, is related to the standard free energy change by the equation... [Pg.261]

Ability to process heterogeneous mixtures, especially suspensions, without problems. [Pg.137]

The model was developed under the following assumptions. First, a parameter a was introduced to consider the process heterogeneity. After, it is considered that the alkalinity is mainly due to the concentration of bicarbonate and VFA. Also, it is assumed that the AD process operates under isothermal conditions (i.e., constant temperature). Finally, a simplified version of the AD process is proposed, where only two steps are included ... [Pg.171]

Biological media are inhomogeneous, and the simplest way to capture structural and functional heterogeneity is to operate at a molecular level. First, one has to model the time spent by each particle in the process and second, to statistically compile the molecular behaviors. As will be shown in Section 9.3.4, this compilation generates a process uncertainty that did not exist in the deterministic model, and this uncertainty is the expression of process heterogeneity. [Pg.205]

In industry many selective oxidations are carried out in a homogeneously catalyzed process. Heterogeneous catalysts are also applied in a number of processes, e.g. total combustion for emission control, oxidative coupling of methane, the synthesis of maleic acid from butanes, the epoxidation of ethylene. Here we focus upon heterogeneous catalysis and of the many examples we have selected one. We will illustrate the characteristics of catalytic oxidation on the basis of the epoxidation of ethylene. It has been chosen because it illustrates well the underlying chemistry in many selective oxidation processes. [Pg.188]

Although not included in this paper, a field experiment has been designed for the Kern River Unit located at the edge of the Kern River field, Kern County, California. The ideal emulsification properties of the crude oil have already been discussed in this paper. This field is an example of reservoir properties that should be considered ideal when selecting a reservoir for future testing of the process heterogeneous production zones, areas of low and high oil saturations, low salinity, low clay content, and crude oil that is easily emulsified. [Pg.427]

Olefin isomerization is common in petrochemical refining processes (heterogeneous catalysis) and, of course, follows the thermodynamic driving forces fran -olefins are more stable than their cis isomers, and internal olefins more stable than terminal olefins (eq. (1)). [Pg.1120]

Development of new catalytic systems and processes. Heterogeneous rather than homogeneous catalysts are used, and oxidative dehydrogenation is increasingly used in place of simple dehydrogenation. New processes are under development that generate fewer or no undesired co-products. [Pg.170]

Homogeneous biodiesel process Heterogeneous biodiesel process... [Pg.446]

Solid, heterogeneous catalysts have the advantages of ease of recovery and recycling and are readily amenable to continuous processing. Heterogeneous cataly-... [Pg.5]

Many volatile low-molecular-weight organics are completely miscible with carbon dioxide at relatively modest temperatures and pressures. However, nonvolatile compounds or those with higher molecular weights, especially polymers, are often insoluble. Insoluble liquid compounds may be dispersed into CO2 with the aid of appropriate surfactants to form a kinetically stable o/c emulsion [10,11]. Stable emulsions are important in separation processes, heterogeneous reactions and materials formation processes, such as precipitation with a compressed fluid antisolvent [40]. These emulsions are the precursors to solid latex particles in dispersion polymerization. Stabilization of o/c emulsions has been studied in-situ to understand surfactant design for polymerization [10,11]. [Pg.135]

Two successful examples of processing heterogeneous reaction mixtures using the Voyager SF have been reported. In one, a fine slurry of micronized zinc cyanide was... [Pg.132]

Modern industrial chemistry is based on catalytic processes. Heterogeneous catalysts are used on a large scale in the following areas ... [Pg.261]

In oxidation processes heterogeneous catalysts are mainly used in gas-phase processes. In the oxidation of ethylene to ethylene oxide, supported silver catalysts are used in the other examples, reducible metal oxide catalysts are used. In amm-oxidation nitriles and HCN are obtained by using NH3/O2 mixtures. The oxy-chlorination of ethylene with HCI/O2 is used for the production of vinyl chloride. [Pg.262]


See other pages where Processes heterogenic is mentioned: [Pg.268]    [Pg.87]    [Pg.54]    [Pg.1]    [Pg.146]    [Pg.172]    [Pg.62]    [Pg.618]    [Pg.136]    [Pg.36]    [Pg.107]    [Pg.204]    [Pg.232]    [Pg.273]    [Pg.216]    [Pg.23]    [Pg.301]    [Pg.266]    [Pg.684]    [Pg.235]    [Pg.115]    [Pg.74]    [Pg.1922]    [Pg.268]    [Pg.283]    [Pg.1778]    [Pg.275]    [Pg.247]    [Pg.298]    [Pg.331]    [Pg.74]    [Pg.3]    [Pg.292]    [Pg.570]   
See also in sourсe #XX -- [ Pg.81 , Pg.134 , Pg.135 , Pg.141 , Pg.203 , Pg.239 , Pg.285 , Pg.342 , Pg.343 , Pg.344 , Pg.345 , Pg.527 ]




SEARCH



Activation free energy heterogeneous processes

Advanced Process Solutions Using Heterogeneous Catalysis

Atmospherically important heterogeneous process, example

Basic Processes in Heterogeneous Reactions

Carbon heterogeneous process

Decompositions rate-limited by a surface or desorption step comparable in some respects with heterogeneous catalytic processes

Diffusional heterogeneous catalytic processes

EXTERNAL TRANSPORT PROCESSES IN HETEROGENEOUS REACTIONS

Examples of elementary processes in heterogeneous catalytic reactions on metal oxides

HETEROGENEOUS PROCESSES REPLACING HOMOGENEOUS CATALYSIS

Heterogeneities mixing processes

Heterogeneous Chemical Processes

Heterogeneous Processes in the Partial Oxidation of Methane to Oxygenates

Heterogeneous catalysis Contact process for SO3 production

Heterogeneous catalysis Haber process

Heterogeneous catalysis adsorption process

Heterogeneous catalysis catalyzed process

Heterogeneous catalytic processes

Heterogeneous catalytic processes catalyst testing

Heterogeneous catalytic processes channel reactors

Heterogeneous catalytic processes commercial process technology

Heterogeneous catalytic processes computational methods

Heterogeneous catalytic processes continuous-flow reactor

Heterogeneous catalytic processes development

Heterogeneous catalytic processes industrial practices

Heterogeneous catalytic processes kinetic models

Heterogeneous catalytic processes methods

Heterogeneous catalytic processes phases

Heterogeneous catalytic processes process intensification

Heterogeneous conduction processes

Heterogeneous conduction processes sample

Heterogeneous electron transfer process

Heterogeneous nucleation processes

Heterogeneous polymerization process

Heterogeneous process

Heterogeneous process

Heterogeneous process activation energy

Heterogeneous process branched-chain oxidation

Heterogeneous process catalysts effect

Heterogeneous process catalytic reactions

Heterogeneous process complex nonlinear interaction

Heterogeneous process copper reactor

Heterogeneous process deep-oxidation products

Heterogeneous process flow reactors, characteristics

Heterogeneous process high-temperature catalytic oxidation

Heterogeneous process hydrogen peroxide concentration

Heterogeneous process inert material

Heterogeneous process kinetic curves

Heterogeneous process methanol decomposition

Heterogeneous process methanol formation selectivity

Heterogeneous process methanol yield

Heterogeneous process oxidative coupling

Heterogeneous process reactor surface material

Heterogeneous process reductive activation

Heterogeneous process short-time catalysis

Heterogeneous process stationary states

Heterogeneous process syngas

Heterogeneous processes with participation of rare gas atoms

Heterogeneous reaction/process

Heterogeneous surface processes

Heterogeneously Catalyzed Processes in Industry

Homogeneous and heterogeneous processes

Homogeneous vs Heterogeneous LRP Processes

INDEX heterogeneous processes

Industrial processes heterogeneous catalysts used

Kinetics of the Heterogeneous Solid State Process

Manufacturing process heterogeneous applications

Modeling Heterogeneous Processes

Oxidation products heterogeneous—homogeneous process

Photographic processing, heterogeneous

Process Development Critical Factors for the Application of (Heterogeneous) Enantioselective Catalysts

Process synthesis heterogeneous models

Processes concerned in a heterogenous reaction

Rates in Commodity and Heterogeneous Epoxidation Processes

Reaction engineering research heterogeneous catalytic processes

Reaction mechanism heterogeneous chemical processes

Rules of Thumb about the Context for a Chemical Process Heterogenous Phase contacting

The Cycling of Iron in Natural Systems Some Aspects Based on Heterogeneous Redox Processes

The rates of heterogeneous processes

Thermal heterogeneous catalytic processes

Transport processes in heterogeneous

© 2024 chempedia.info