Purification of p-dichlorobenzene and m-chloronitrobenzene crystalline particles by sweating.
スポンサーリンク
概要
- 論文の詳細を見る
In order to obtain highly purified organic substances, sweating of crude crystalline particles was investigated with two organics; m-chloronitrobenzene and p-dichlorobenzene. By maintaining the crude crystals at a temperature close to the equilibrium one in order to form melts and followed by rapid drainage of the melts, the crystals were found to be purified upto 99.99% within 1.5 or 2hr. The final purity was found to depend on the sweating temperature. The rate of purification was analyzed with a model that the drainage of the melts dominated the phenomena of sweating. Empirically, the rate of removal of the melts was expressed as k(α-α∞)2 where k is the coefficient for purification rates and (α-α∞) denotes the free melts removable by the sweating. The values of k were found to be common to the examined two organics and α∞, was a function of the sweating temperature. The purification rate was thus analyzed quantitatively.
- 公益社団法人 化学工学会の論文
著者
-
Matsuoka Masakuni
Department Of Chemical Engineering Tokyo University Of Agriculture And Technology
-
OHISHI MASAYUKI
Department of Chemical Engineering, Tokyo University of Agriculture and Technology
-
KASAMA SHUNJI
Department of Chemical Engineering, Tokyo University of Agriculture and Technology
-
MATSUOKA Masakuni
Department of Chemical Engineering , Tokyo University of Agriculture and Technology
関連論文
- Solid-State Crystallization Behavior of Tetrabenzoporphyrin Organic Semiconductors
- Simplified heating time calculation using the Schmidt graphical method for PCB-contaminated capacitors undergoing the vacuum thermal recycling process
- Solid-State Crystallization of CuTBP (Copper Tetrabenzoporphyrin) Organic Semiconductor
- Analysis and Simulation of Phase Transformation Kinetics of Zeolite A from Amorphous Phases
- Nucleation Rates of Zeolite A Crystals from Clear Aluminosilicate Solutions
- BEHAVIOR OF PHASE TRANSITION AND HEAT TRANSFER CHARACTERISTICS IN A LATENT HEAT STORAGE UNIT WITH COMPOSITE MATERIAL
- Effect of Additives on Polymorphic Transition of Theophylline in Mechano-Chemical Processing
- Effects of Suspension Density on Crystal Growth Rate in Multiparticle Agitated Crystallizers
- CVD Synthesis of Alumina-supported Molybdenum Carbide Catalyst
- Effect of Initial Supersaturation on Mechanism of Purity Drop during Preferential Crystallization
- PURIFICATION BY SWEATING OF ORGANIC SOLID SOLUTIONS BY LAYER AND SUSPENSION TYPE MELT CRYSTALLIZATION OPERATIONS
- FT-IR Study on the Effect of Solvents on Polymorphic Crystallization of Organic Compounds
- Kinetic Study on Polymorphic Solid-State Transformation of Organic Compounds : Bisphenol A and DL-Methionine
- Agglomeration Kinetics and Product Purity of Sodium Choloride Crystals in Batch Crystallization
- Purity of m-Chloronitrobenzene Agglomerates from Batch Seeded Suspension Crystallization
- Effect of Face Crystallographic Orientation of Seed Crystal on Purity Drop during Preferential Crystallization
- Etch Rate Distribution over Silicon Wafers in EPW Solutions : Semiconductors and Semiconductor Devices
- Secondary Growth Phenomena in Industrial Crystallization and Their Effects on Crystal Quality
- PREPARATION OF SILICON THIN DIAPHARAGMS FREE FROM MICROPYRAMIDS USING ANISOTROPIC ETCHING IN KOH SOLUTIONS
- Kinetics of Solid State Polymorphic Transition of Caffeine
- Solid-State Recrystallization Behavior of Binary Inorganic Salt Systems by Mechanochemical Processing
- Surface Phenomena and Mechanism of Polymorphic Transition in Theophylline
- Surface modification of silica particles with polyimide by ultrasonic wave irradiation
- Surface modification of silica particles using polyimide
- Study of polyimide particle surface modification by the high-speed impact method
- A Continuous Production Method of Nano-Particles of Leucine by Controlled Nucleation and Growth in Ternary Systems
- Effect of Washing L-Threonine Seed Crystals on Surface Nucleation of D-Threonine
- Solid-State Crystallization Behavior of Tetrabenzoporphyrin Organic Semiconductors
- Kinetics of Humidity Driven Solid-State Polymorphic Transition of Theophylline Anhydrates
- Controlled Production of Polymorphic Mixtures of MPPO in Batch Cooling and Drowning-Out Crystallization
- NaCl Crystal Growth Rate under Conditions of Continuous Slurry Feeding
- On the Size of Critical Nuclei and Growth Units of Zeolite A during Phase Transformation from Aluminosilicate Solutions
- Effects of Undersaturation on Crystal Size Distribution in Cooling Type Batch Crystallization
- Composition of solid condensate on a cold surface from a mixed organic vapor.
- A combined crystallization process to separate binary organic eutectic mixtures.
- PHENOMENA OF SOLIDIFICATION IN NORMAL FREEZING OF A SIMPLE EUTECTIC-FORMING ORGANIC MELT
- Rate of solid condensation from organic vapors on a cold surface.
- Purification of p-dichlorobenzene and m-chloronitrobenzene crystalline particles by sweating.
- The separation of eutectic forming organic mixtures by normal freezing.
- Rate of composition changes of organic solid solution crystals in sweating operations.
- Nucleation and growth of nuclei from organic vapors on a cold surface.