Carbon Dioxide → Magnesium bicarbonate

HRID 2405527Notes

Reaction equation

HRID 2405527 reaction equation
[C:1](=[O:4])([O-:3])[O-:2].[Mg+2:5].[O-2].[Mg+2].C(=O)=O>O>[C:1](=[O:2])([OH:4])[O-:3].[Mg+2:5].[C:1](=[O:2])([OH:4])[O-:3]

Participants

5

Reactant 3

HCID 280Carbon DioxideHCID 11029Magnesium CarbonateHCID 6850729Magnesium monoxide2×

Product 1

HCID 102204Magnesium bicarbonate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent3×

Procedure

A light-burned magnesia, made from calcination of magnesium carbonate (Si 2.5 wt %, Fe 0.9 wt %, Al 0.5 wt %) at 750-850° C. for 5 hours, is hydrated for 2 hours at 80° C. The weight ratio of water to magnesium oxide is 1:1. Then water is added into the mixture to prepare slurry at a weight ratio of water to magnesium oxide of 40:1. After that, carbon dioxide (90 vt %) is introduced into the slurry to react for 30 minutes at 20° C. Subsequently, a pure magnesium bicarbonate solution (MgO: 23 g/L, Fe: 1.1 ppm, Al: 1.0 ppm) is obtained after clarification and filtration

Workup

  1. customto react for 30 minutes at 20° C

Sources & evidence

ORD record
ord-40d631d047374d6ea5492e21e4f6f574
Source dataset
uspto-grants-2014_08
Patent number
US08808660B2

Reaction notes

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