Radioactive (/sup 14/C) tracer studies of methanol conversion over a Ni-ZSM-5 zeolite

Conference · Thu Sep 01 04:00:00 EDT 1983 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6805119

Hwu, F S; Hightower, J W

Within the last few years, researchers at the Mobil Research and Development Corporation have synthesized a novel zeolite catalyst, ZSM-5, which is capable of converting oxygenates, e.g., methanol, into aliphatics and aromatic hydrocarbons in the gasoline boiling range. Since technology exists for making methanol from coal-derived synthesis gas, this new process provides an additional source of chemical feedstocks and transportation fuels. In the conversion of methanol to hydrocarbons over such catalysts, more than 100 different compounds have been identified. The major hydrocarbon products can be classified into three categories: olefins, paraffins, and aromatics. There is a strong possibility that some of these products, once formed, react further to produce other products. The objective of this research was to investigate this possibility by labeling some of the products and following the transfer of the label to other products. The interconversion of methanol and dimethyl ether over such catalysts has been confirmed in several studies. At very low conversion of methanol, dimethyl ether is the major product, and the transformation of methanol into dimethyl ether is 20 to 30 times faster than hydrocarbon formation. On the other hand, when dimethyl ether is the starting material, both methanol and hydrocarbons are formed readily. The intermediate role of dimethyl ether was also confirmed by using a /sup 13/CH/sub 3/O-/sup 13/CH/sub 3/ tracer technique.

• Research Organization: Department of Chemical Engineering, Rice University, Houston, Texas
• OSTI ID: 6805119
• Report Number(s): CONF-830814-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 28:5
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALCOHOLS
ALKANES
ALKENES
AROMATICS
CARBON 14 COMPOUNDS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CONVERSION
HYDROCARBONS
HYDROXY COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPE APPLICATIONS
KINETICS
LABELLED COMPOUNDS
MATERIALS
METHANOL
MINERALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PRODUCTION
REACTION KINETICS
TRACER TECHNIQUES
WAXES
ZEOLITES