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Record W4312871163 · doi:10.1002/0471227617.eoc056

Catalytic Distillation

2002· other· en· W4312871163 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueEncyclopedia of Catalysis · 2002
Typeother
Languageen
FieldEngineering
TopicProcess Optimization and Integration
Canadian institutionsUniversity of Waterloo
Fundersnot available
KeywordsChemistryDistillationCatalysisMass transferPetrochemicalAldol condensationChemical engineeringFractional distillationReactive distillationExothermic reactionSelectivityHeterogeneous catalysisOrganic chemistryChromatography

Abstract

fetched live from OpenAlex

Abstract Catalytic distillation (CD) is a “green” reactor technology that combines a heterogeneous catalytic reaction and the separation of reactants and products via distillation in a single reactor/distillation column. CD is a rapidly developing field that incorporates catalysis, kinetics, and mass transfer to provide more selective and energy efficient processes. The heterogeneous catalyst provides the sites for catalytic reactions and also the interfacial surface for liquid/vapor separation. The distinct difference between the CD column and the conventional distillation column lies in the placement of solid catalysts usually incorporated in some kind of packing (CD packing) within the distillation column to provide a reaction section in addition to the traditional trays or random packings used for separations in the stripping the rectifying sections of the distillation column. Mass transfer characteristics of the CD packing in the reaction zone has significant influence on the product yield and selectivity. Equilibrium and nonequilibrium models have been developed to simulate and design CD processes. The benefits of CD include energy and capital savings, enhanced conversion and product selectivity, longer catalyst lifetime, and reduction of waste streams. Equilibrium limited and exothermic processes will benefit from CD. The first commercial application of CD was for the production of methyl tertiary butyl ether (MTBE). There are many other possible applications of CD such as the hydration of olefins, alkylations, esterifications, hydrolysis, aldol condensation, hydrogenation, desulfurization, and oligomerization of olefins. Currently most of the CD processes are related to the petroleum and petrochemical industries. The use of CD for the production of bulk and fine chemicals remain largely unexplored. Besides the development of new “green” processes using CD, fruitful areas of future research and development on CD include fundamental aspects of combining catalysis, reaction engineering, multiphase flow and separation, and the development of novel CD packings.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.024
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.004
GPT teacher head0.189
Teacher spread0.185 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it