Catalyst compositions having enhanced acidity for steam reforming processes
a technology of catalyst composition and steam reforming process, which is applied in the direction of physical/chemical process catalyst, metal/metal-oxide/metal-hydroxide catalyst, bulk chemical production, etc., can solve the problem of high thermodynamic potential of coke formation on catalyst, high energy consumption and cosub>2 /sub>emission, and insufficient catalyst technology in some processes to provide cost-effective and durable means
Active Publication Date: 2021-07-29
SAUDI ARABIAN OIL CO
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Benefits of technology
This approach enhances the durability and cost-effectiveness of steam reforming processes by improving methane conversion and hydrogen production, while concurrently utilizing a waste material and reducing environmental impact by minimizing coke formation and energy consumption.
Problems solved by technology
One challenge in steam reforming is the high thermodynamic potential for coke formation on catalysts.
Other challenges include high energy consumption and CO2 emissions.
Present catalyst technology is insufficient in some processes to provide cost-effective and durable means for steam reforming.
Method used
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Embodiment Construction
[0015]So that the manner in which the features and advantages of the embodiments of compositions of Group VIB metal modified red mud along with systems and methods for steam reforming with such compositions and for producing such compositions, may be understood in more detail, a more particular description of the embodiments of the present disclosure briefly summarized previously may be had by reference to the embodiments thereof, which are illustrated in the appended drawings, which form a part of this specification. It is to be noted, however, that the drawings illustrate only various embodiments of the disclosure and are therefore not to be considered limiting of the present disclosure's scope, as it may include other effective embodiments as well.
[0016]As noted, red mud is a caustic waste material generated during alumina extraction from bauxite ore. Red mud includes a mixture of transition metals, for example as listed in Table 1.
TABLE 1Example composition ranges for global red...
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Abstract
Methods for steam reforming over a modified red mud catalyst composition, one method including providing a methane feed and a steam feed to react over the modified red mud catalyst composition at increased temperature and increased pressure to produce synthesis gas comprising H2 and CO, the composition comprising red mud material produced from an alumina extraction process from bauxite ore; nickel oxide, the nickel oxide present at between about 5 wt. % to about 40 wt. % of the modified red mud catalyst composition; and a Periodic Table Group VIB metal oxide, the Group VIB metal oxide present at between about 1 wt. % and about 30 wt. % of the modified red mud catalyst composition.
Description
BACKGROUNDField[0001]Embodiments of the disclosure relate to catalyst compositions for use in reforming processes. In particular, certain embodiments of the disclosure relate to Periodic Table Group VIB metal oxide containing catalyst compositions for and methods of steam reforming.Description of the Related Art[0002]Steam reforming of natural gas is a method of producing commercial bulk hydrogen. Methane and steam are used to produce carbon monoxide and hydrogen (synthesis gas or syngas). In addition, more hydrogen is produced through the water-gas shift reaction. Equation 1 shows the general chemical equation for steam reforming and Equation 2 shows the general chemical equation for the water-gas shift reaction.CH4+H2OCO+3H2 Eq. 1CO+H2OCO2+H2 Eq. 2[0003]One challenge in steam reforming is the high thermodynamic potential for coke formation on catalysts. Other challenges include high energy consumption and CO2 emissions. Nickel catalysts with aluminum oxide and magnesium oxide as...
Claims
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IPC IPC(8): C01B3/40B01J35/02C01B32/40B01J37/00B01J35/10B01J35/00
CPCC01B3/40B01J35/023C01B32/40B01J37/009C01B2203/1623C01B2203/1058C01B2203/0233C01B2203/1638C01B2203/0283B01J35/1014C01B2203/1082C01B2203/1041C01B3/384B01J23/883B01J37/0209B01J23/866B01J23/888B01J23/755Y02P20/52B01J35/40B01J35/613
Inventor FADHEL, BANDAR A.ALSOLAMI, BANDAR H.BAMAGAIN, RAMIALBUALI, MOHAMMED A.
Owner SAUDI ARABIAN OIL CO