Let’s consider a typical molar ratio for SAPO-11 synthesis:

• SiO₂ / Al₂O₃ / P₂O₅ / TPA / H₂O = 0.3 / 1 / 1 / 2 / 50

To scale this for 60 mL of gel, follow these steps:

To summarize, for 60 mL of SAPO-11 zeolite precursor gel:

• H₃PO₄: 5.88 g
• Al(C₃H₇O)₃: 12.25 g
• TEOS: 4.02 mL
• DPA: 16.63 mL
• H₂O: 54 mL

Ensure the total volume adds up correctly, and adjust if necessary. The precise amounts may vary slightly based on actual densities and molar masses.

I hope this helps you.

To calculate the proportions of the compounds for 60 mL of SAPO-11 zeolite precursor gel, you need to know the specific composition and molar ratios of the precursor materials. The typical components for SAPO-11 zeolite synthesis might include a source of silicon (like TEOS), aluminum (like aluminum isopropoxide), phosphorus (like phosphoric acid), and an organic template (like di-n-propylamine).

Here’s a step-by-step process to calculate the proportions:

1. Determine the molar ratios of the components in the precursor gel. For SAPO-11, a typical molar composition might be:

\text{Al}_2\text{O}_3 : \text{P}_2\text{O}_5 : \text{SiO}_2 : \text{Template} : \text{H}_2\text{O}

1 : 1 : 0.3 : 2 : 50

2. Calculate the total moles of each component needed for the desired volume of gel. For 60 mL, you need to scale down the typical synthesis recipe. Assume you start with the required amount of water and then adjust other components accordingly.

3. Convert moles to grams or milliliters using the molar mass or density of each compound.

Let’s assume we use a simplified composition based on the molar ratios above. Here’s how to proceed:

Example Calculation

Components and their molar masses:

• ( \text{Al}_2\text{O}_3 ) (Aluminum isopropoxide): Molar mass ≈ 102 g/mol

• ( \text{P}_2\text{O}_5 ) (Phosphoric acid, ( \text{H}_3\text{PO}_4 )): Molar mass ≈ 98 g/mol

• ( \text{SiO}_2 ) (TEOS, ( \text{Si(OC}_2\text{H}_5\text{)}_4 )): Molar mass ≈ 208 g/mol

• Template (di-n-propylamine): Density ≈ 0.76 g/mL, Molar mass ≈ 101 g/mol

• Water: Density = 1 g/mL, Molar mass ≈ 18 g/mol

Step-by-Step Calculation:

1. Assume 1 mole of water (H_2O) in 60 mL gel:

\text{Water needed} = 50 \text{ moles} \times 18 \text{ g/mol} = 900 \text{ g}

However, 60 mL total gel volume means the water amount must be less than this proportionally. For simplicity, we calculate other components first.

2. **​⬤

To calculate the proportions in grams or milliliters of the compounds for 60 mL of SAPO-11 zeolite precursor gel, you need to follow a detailed recipe based on the specific synthesis method for SAPO-11. Here is a general procedure you can adapt:

General Synthesis Method for SAPO-11 Precursor Gel

Materials and Molar Ratios

For synthesizing SAPO-11, typical molar ratios are:

• Al source (usually Al isopropoxide or Al2O3): 1 mole
• P source (usually H3PO4): 1 mole
• Si source (usually SiO2 or TEOS): 0.3 to 0.6 mole
• Template (typically DPA - di-n-propylamine): 1 to 2 moles
• Solvent (usually water): required to achieve the desired gel volume

Let's assume the following molar ratios for simplicity: Al:P:Si:Template:H2O=1:1:0.3:1:50\text{Al:P:Si:Template:H2O} = 1:1:0.3:1:50Al:P:Si:Template:H2O=1:1:0.3:1:50

Step-by-Step Calculation

Final Proportions for 60 mL of SAPO-11 Precursor Gel

• Al isopropoxide: 10.42 grams
• H3PO4 (85%): 2.97 mL
• TEOS: 3.41 mL
• DPA: 7.15 mL
• Water: 45.94 mL