I am in need of Mg-Al layered double hydroxide particles. Can any one suggest me where I can get these in India or Can any one synthesize it in India
Thank You,
Prachi
Why don't you do it yourself? It is cheap, easy and clean, you do not need expensive nor sophisticated equipment.
I have tried it but I am doubtful regarding what I have synthesized is correct or not.
I also need it in slurry form i.e. homogeneous suspension of Mg-Al LDH.
So I did heat treatment by keeping samples in 100 degree for 16 hours. But I am doubtful as suspension is turbid.(As per literature it should be transparent solution)
When you heat under reflux the suspension what probably occurs is an increase in the particle size and thus the particles go to the bottom of the beaker. But small particles can still remain in suspension, showing turbidity, so do not bother excessively about the presence of turbidity. More important is to reach a pH high enough for a complete precipitation of Mg(II) and Al(III) species.
To check if you have obtained the Mg-Al LDH the best option is to record an XRD diagram of the DRIED solid.
If you need dried sample and slurry sample, the way to proceed is as follows:
You should prepare a good amount of your sample, keep it in suspension by magnetic stirring or so. Then, yo split the suspension into two parts; one part is filtered and washed until you check chemically the absence of counterions, and the other portion is left to settle and then decanted, but leaving enough volume of liquid to have a slurry.
If you are still interested, you can contact me by e-mail and we can discuss the subject.
Hope this has helped
Vicente Rives
Dr. Vincent,
Thank you for your kind reply.
Can you please tell me your email ID so that I can contact you through it.
Thank You
Dr. Prachi
I have tried but not succeed. Then i was synthesised Zn- Al layered double hydroxides successfuly.
In fact the Mn-Al sysnthesis is very simple. many papers can be found in the literature that report the detailed synthesis, for example by means of co-precipitation, starting from nitrates or chlorides of Mg and Al. The hydrotalcite forms at ambient temperature and the most useful characterization techniques are XRD and FT-IR
Starting mixture of alumina gel and reactive MgO (from thermal decomposition of Mg hydroxy carbonate at 600 °C) and water. The relative suspension treated at 80 °C for 24 hours or hydrothermally treated at 110 °C for 12 hours.
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