Product details

Fractional distillation with the bubble tray column with Cobra4

Fractional distillation with the bubble tray column with Cobra4

Item no.: P3031660

Difficulty Expenditure of Time print
  • Description
  • Scope of Supply
  • Accessories
  • Downloads and Documents

Principle

In countercurrent distillation (rectification) using a column, the rising vapour can enter into interactions with the condensate. In this manner, a fractional distillation, i.e. a distillation in several steps for the separation of substances with similar boiling points, can be performed in a single apparatus. If bubble tray columns are used condensate can be removed from the individual bubble trays.

Benefits

  • Simplified implementation: all pre-settings already prepared
  • Didactic gas chromatograph included
  • Glass jacket system easily expandable
  • Simultaneous temperature measurement at four points

Tasks

  1. Investigate the mode of operation of a fractionating tower on a two-stage bubble tray column. Distil a mixture of three n-alcanes first with total reflux and then without any reflux.
  2. Subsequently, examine and compare the initial mixture, the sump product, the head products and the condensates of both trays gas chromatographically.

What you can learn about

  • Bubble tray column
  • Rectification
  • Continuous and discontinuous distillation
  • Vapour pressure
  • Vaporisation
  • Condensation
  • Raoult's law
  • Gas chromatography

Necessary accessories

  • Precision balance 620g/0.001g

Software included. Computer not provided.

Device Name Item no. Qty
Dimroth condenser MAU-26525500 1,00
Dropping funnel, 50 ml, Gl 18 MAU-27222000 1,00
Cooling jacket, GL 25/8 MAU-27225000 1,00
curricuLAB measureLAB 14580-61 1,00
Retort stand, h = 750 mm 37694-00 1,00
Holder for sensors with support rod 12680-00 3,00
Glass tube, straight, l=80 mm, 10/pkg. 36701-65 1,00
Syringe 1ml, Luer, 10 pcs 02593-03 1,00
USB charger for Cobra4 Mobile-Link 2 and Wireless/USB-Link 07932-99 2,00
Beaker, tall form, 150 ml 36003-00 2,00
Tubing connector, ID 6-10mm 47516-01 2,00
Funnel, glass, top dia. 50 mm 34457-00 1,00
Stopper,IGJ 29/32,glass,clear 41256-10 1,00
Silicon grease Molykote, 50 g 31863-05 1,00
Wrench for steel cylinders 40322-00 1,00
Ethyl acetate 250 30075-25 1,00
Right angle boss-head clamp 37697-00 14,00
Cobra4 Wireless/USB-Link incl. USB cable 12601-10 2,00
Measure probe for gas chromatog 36670-10 1,00
Support rod, stainless steel, l = 250 mm, d = 10 mm 02031-00 1,00
Round-bott.flask, 500ml,IGJ 29/32 35862-00 1,00
Teflon sleeve IGJ 19, 10 pcs 43616-00 1,00
Snap-cap vials,d=24mm,h=52mm,10p. 33621-03 2,00
Hose clip, diam. 8-16 mm, 1 pc. 40996-02 10,00
n-hexane,puriss. 100 31369-10 1,00
Rubber caps, 10 pcs 39275-03 1,00
Connecting cord, 32 A, 250 mm, blue 07360-04 1,00
Immersion probe NiCr-Ni, teflon, 300 °C 13615-05 4,00
Glass tubes,l.250 mm, pkg.of 10 36701-68 1,00
Cannula 0,45x13 mm, Luer, 20 pcs 02598-04 1,00
Bath for thermostat, makrolon 08487-02 1,00
Pasteur pipettes, 250 pcs 36590-00 1,00
Heating mantle f. roundbottom flask, 250ml 49542-93 1,00
Connecting tube,IGJ29/32-GL18/8 35678-02 1,00
Table stand for 2 l steel cylinders 41774-00 1,00
Power regulator, 230 V, with phase controlled modulator 32286-93 1,00
Gas bar 40466-00 2,00
Water, distilled 5 l 31246-81 2,00
Universal clamp 37715-00 12,00
Water jet pump, plastic 02728-00 1,00
Cobra4 Sensor-Unit Chemistry 12630-00 1,00
Control unit gas chromatograph 36670-99 1,00
Support rod, stainless steel, 750 mm 02033-00 4,00
Bubble tray column, model, with 2 trays 35914-15 1,00
Teflon sleeve IGJ 29, 10 pcs 43617-00 1,00
Dish, plastic, 150x150x65 mm 33928-00 1,00
Connecting caps,10 pcs, GL18 41230-03 1,00
n-pentane 250 31707-25 1,00
Rubber tubing, i.d. 6 mm 39282-00 10,00
Acetone, chemical pure, 250 ml 30004-25 1,00
Boiling beads, 200 g 36937-20 1,00
Microliter syringe, 10 micro-l 02607-00 1,00
External circulation set for thermostat Alpha A 08493-02 1,00
Graduated cylinder 100 ml 36629-00 1,00
Clamp for heating mantle 49557-01 1,00
Connecting tube,IGJ 19/26-GL25/12 35800-05 1,00
Steel cylinder helium, 2 l, filled 41776-00 1,00
Spoon, special steel 33398-00 1,00
Glass rod,boro 3.3,l=200mm, d=5mm 40485-03 1,00
Lab thermometer,-10..+110 °C 38056-00 1,00
Stopwatch, digital, 1/100 s 03071-01 1,00
Cobra4 Sensor-Unit 2 x Temperature, NiCr-Ni 12641-00 2,00
Soap bubble flow meter 36675-00 1,00
Support rod, stainless steel, 1000 mm 02034-00 2,00
Column head, with stopcock, ST 19/26 35919-01 1,00
Beaker, 250 ml, high-form 46027-00 1,00
Security bottle with manometer and three-way stopcock 34170-88 1,00
Gasket for GL18, 8mm hole, 10 pcs 41240-03 1,00
Quartz glass wool 10 g 31773-03 1,00
Rubber tubing,vacuum,i.d.6mm 39286-00 2,00
Ethyl alcohol, absolute 500 30008-50 1,00
Glass jacket 02615-00 1,00
Immersion thermostat Alpha A, 230 V 08493-93 1,00
Gas separation column 36670-00 1,00
Support base DEMO 02007-55 2,00
Round bottom flask, 250 ml, 2-neck, GL25/12, GL18/8 35843-15 1,00
Clamp f.ground joint,plastic,NS19 43614-00 2,00
Reducing valve for CO2 / He 33481-00 1,00
Hose clip f.12-20 diameter tube 40995-00 4,00
n-heptane, extra pure 250 31366-25 1,00
Laboratory pen, waterproof, black 38711-00 1,00
Connecting cord, 32 A, 250 mm, red 07360-01 1,00
Adapter, BNC-plug/socket 4 mm 07542-26 1,00
Document     Filesize
p3031660e.pdf Experiment guide, English 627.79 KB

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