(a) The following sets of N2 adsorption data were obtained at 77 K using a commercial...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
(a) The following sets of N2 adsorption data were obtained at 77 K using a commercial rapid-adsorption analyzer for three samples (each about 0.25 g) of H-ZSM-5 with Si:AI ratios of 12 to 70. From these data calculate the monolayer volume Vm and BET surface area for each sample. Compare the surface areas for the three different samples. Explain how it is possible to have significant variations in surface area for the same zeolite structure. Volume N; Adsorbed (cm' STP/g) ZSM 5 (Si/AI-12) ZSM-5 (Si/AI -30) ZSM 5 (Si AI-70) 104.941 110.752 113.994 116.206 118.345 Relative Pressure (P/P.) 0.05 0.1125 88.953 92.21 94.765 96.124 107.236 113.518 117.974 121.181 123.309 0.175 0.2375 0.3001 97.27 (b) Why is measurement of metal surface area important? List at least twvo reasons. (a) The following sets of N2 adsorption data were obtained at 77 K using a commercial rapid-adsorption analyzer for three samples (each about 0.25 g) of H-ZSM-5 with Si:AI ratios of 12 to 70. From these data calculate the monolayer volume Vm and BET surface area for each sample. Compare the surface areas for the three different samples. Explain how it is possible to have significant variations in surface area for the same zeolite structure. Volume N; Adsorbed (cm' STP/g) ZSM 5 (Si/AI-12) ZSM-5 (Si/AI -30) ZSM 5 (Si AI-70) 104.941 110.752 113.994 116.206 118.345 Relative Pressure (P/P.) 0.05 0.1125 88.953 92.21 94.765 96.124 107.236 113.518 117.974 121.181 123.309 0.175 0.2375 0.3001 97.27 (b) Why is measurement of metal surface area important? List at least twvo reasons.
Expert Answer:
Answer rating: 100% (QA)
b b Metal surface area measuring this value is an essential steps in understanding the ways in wh... View the full answer
Related Book For
Principles of Macroeconomics
ISBN: 978-0134078809
12th edition
Authors: Karl E. Case, Ray C. Fair, Sharon E. Oster
Posted Date:
Students also viewed these chemistry questions
-
Explain how it is possible to have a deferred tax liability with regard to the presentation of a subsidiarys assets in a consolidated balance sheet, whereas on the subsidiarys balance sheet the same...
-
Explain how it is possible for 2, 29-dihydroxy-1, 19-binaphthyl (shown at right) to exist in enantiomeric forms. OH
-
Explain how it is possible that a shareholder could be considered both an internal and external stakeholder.
-
need help entering sale oof land transaction in intuitproconnect On December 31, 2021, Anthony sold the inherited land from his uncle. The consideration was \( \$ 950,000 \) installment note plus the...
-
Let X1, . . ., Xn be a random sample from a uniform distribution on the interval ( 1, + 1). (a) Find a moment estimator for . (b) Use the following data to obtain a moment estimate for : 11.72 12.8...
-
Explain how the U.S. government managed to accumulate a debt of more than $18 trillion. To whom does it owe this debt? Is the debt a burden on future generations?
-
Match the following terms with the correct definitions: (a) Depreciation. (b) Depletion. (c) Amortization. (d) Gross profit. (e) Operating profit. (f) Net profit. (g) Equity method. (h) Cost method....
-
On November 1, 2007, Janet Morton and Kim Wong formed Pet Kingdom, Inc., tosell pets and pet supplies. Pertinent information regarding Pet Kingdom is summarized as follows. ¢ Pet Kingdoms...
-
You are a U.S.-based company. In fulfillment of a long-term contract, you are expecting a payment of 500,000PLN (Polish zloty) three years from now. The annual risk-free rate of return is 3.0% in the...
-
Pay Corporation acquired a 75 percent interest in Sue Corporation for $1,200,000 on January 1, 2011, when Sue's equity consisted of $600,000 capital stock and $200,000 retained earnings. The fair...
-
Whirlpool Corporation is a well-known and established home appliances manufacturer that has an extensive reach globally. Whirlpool is also known as the pioneer in the home appliance field and have a...
-
How is the order in which items are shown on the balance sheet determined?
-
The risk of approaching an environmental tipping point is unknown, but the stakes are high. Contemplate on what this statement may be saying on the risk of the extended use by humans of some...
-
An example of an opportunity that increases the risk of fraud is: a. the client operates in a highly competitive industry. b. the client has a history of making losses. c. there is a high volume of...
-
Compare and contrast the way the following items are treated or manifested in the human economy versus the natural ecosystems: a) energy, b) material cycling, and c) means (i.e., resources) and ends...
-
Describe an employee self-service system.
-
u jan Q.6 Consider the two-country (Canada and Germany) model of exchange rate determination discussed in class with short-run nominal rigidities and in which money market equilibrium holds every...
-
Which of the following statements is false? a. Capital leases are not commonly reported in a Capital Projects Fund. b. A governmental entity may report a Capital Project Fund in one year but not the...
-
For each of the following scenarios, tell a story and predict the effects on the equilibrium level of aggregate output (Y) and the interest rate (r): a. During 2009, the Federal Reserve was easing...
-
Analyst 1 suggested that the demand curve for newspapers in Baltimore might have shifted to the right because people were becoming more literate. Think of two other plausible stories that would...
-
The following table gives recent figures for yield per acre in Illinois and Kansas: a. If we assume that farmers in Illinois and Kansas use the same amount of labor, capital, and fertilizer, which...
-
What are the main phases of a design review?
-
Classify these Bluetooth layers using the OSI model: a. baseband; b. L2CAP; c. RFCOMM.
-
Use Bluetooth to connect a simple sensor, such as an electric eye, to a database.
Study smarter with the SolutionInn App