1. What is Mass Productivity?

Definition: Mass Productivity is defined as the mass of desired product produced per unit time and per mass of catalyst.

Purpose: It helps chemical engineers and researchers measure the efficiency of production processes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( MP \) — Mass Productivity (%)
• \( MPr \) — Mass of Product (kg)
• \( TMS \) — Total Mass With Solvents (kg)

Explanation: The mass of product is divided by the total mass (including solvents) and multiplied by 100 to get the percentage productivity.

3. Importance of Mass Productivity Calculation

Details: Measuring mass productivity helps optimize chemical processes, reduce waste, and improve cost efficiency in production.

4. Using the Calculator

Tips: Enter the mass of product and total mass with solvents in kilograms. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is considered good mass productivity?
A: This varies by industry and process, but generally higher percentages indicate more efficient processes.

Q2: Does this account for reaction time?
A: No, this is a mass-based calculation. For time-based productivity, use space-time yield calculations.

Q3: Should I include byproducts in the product mass?
A: No, only include the mass of your desired product for accurate productivity measurement.

Q4: How does this differ from atom economy?
A: Atom economy considers molecular weights of reactants and products, while mass productivity uses actual mass measurements.

Q5: Can this be used for batch processes?
A: Yes, this calculator works for both batch and continuous processes.