Method for preparing rear earth Y type molecular sieve
A molecular sieve and rare earth technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as uneven distribution of rare earth ions, and achieve the effect of improving production efficiency
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Embodiment 1
[0053] Weigh 177 grams of NaY molecular sieve (about 150 grams on a dry basis), add 750 grams of deionized water at 70°C, add 9 grams of lanthanum chloride while stirring, stir and exchange at 70°C for 60 minutes, and then add oxalic acid with a concentration of 15% solution, continue to stir for 20 minutes, then wash and filter with 225 grams of deionized water at 70°C, and discard the waste filtrate to obtain a reuse filter cake; add 525 grams of deionized water at 50°C to the reuse filter cake, while Add 52.5 grams of lanthanum chloride while stirring, stir for 60 minutes at 50°C, then wash and filter with 225 grams of 70°C deionized water to obtain product filter cake A and reuse filtrate C; 177 grams of NaY molecular sieve ( about 150 grams on a dry basis), was added to 750 g of recycled filtrate C, stirred at 70°C for 60 minutes, then added with a concentration of 15% oxalic acid solution, continued to stir for 20 minutes, and then deionized with 225 grams of 70°C Wash w...
Embodiment 2
[0055] Weigh 177 grams of NaY molecular sieve (about 150 grams on a dry basis), add 750 grams of deionized water at 60°C, add 9 grams of lanthanum chloride while stirring, stir and exchange at 60°C for 60 minutes, and then add oxalic acid with a concentration of 15% solution, continue stirring for 20 minutes, then wash and filter with 225 grams of deionized water at 60°C, and discard the waste filtrate to obtain a reuse filter cake; add 525 grams of deionized water at 50°C to the reuse filter cake, and Add 45.0 grams of lanthanum chloride while stirring, stir for 60 minutes at 60° C., then wash and filter with 225 grams of deionized water at 60° C. to obtain product filter cake A and reuse filtrate C; 177 grams of NaY molecular sieve ( about 150 grams on a dry basis), was added to 750 g of recycled filtrate C, stirred at 60°C for 60 minutes, then added with a concentration of 15% oxalic acid solution, continued to stir for 20 minutes, and then deionized with 225 grams of 60°C ...
Embodiment 3
[0057]Weigh 177 grams of NaY molecular sieve (about 150 grams on a dry basis), add 750 grams of deionized water at 50°C, add 9 grams of lanthanum chloride while stirring, stir and exchange at 50°C for 60 minutes, and then add oxalic acid solution with a concentration of 15% , continue to stir for 20 minutes, then wash and filter with 225 grams of deionized water at 50°C, and discard the waste filtrate to obtain a reuse filter cake; add 525 grams of deionized water at 50°C to the reuse filter cake, while stirring While adding lanthanum chloride 37.5 grams, stirred at 50 DEG C for 60 minutes, then washed and filtered with 225 grams of deionized water at 50 DEG C to obtain product filter cake A and reuse filtrate C; 177 grams of NaY molecular sieve (dry base about 150 grams), added to 750 g of reuse filtrate C, stirred for 60 minutes at 50°C, then added a 15% oxalic acid solution, continued to stir for 20 minutes, and then used 225 grams of 50°C deionized water Washing, filtering...
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