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Question 1. 30% X-ray diffraction was used to determine the average size of metal crystals in a 5.0 mass % Pd/y-Al203 catalyst. The Pd(111) line

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Question 1. 30% X-ray diffraction was used to determine the average size of metal crystals in a 5.0 mass % Pd/y-Al203 catalyst. The Pd(111) line profile is shown in the Figure below. Calculate the average size of the Pd crystals in this catalyst. Cu Ka radiation was used. 100 90 80 70 50 X-Ray Intensity, c/s 50 40 30 20 10 0 36 38 40 42 44 Diffraction Angle, . 20

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