The present invention provides a method for preparing acrylic acid and methyl acrylate. The method comprises passing the feed gas containing dimethoxymethane and carbon monoxide through a solid acid catalyst to generate acrylic acid and methyl acrylate with a high conversion rate and selectivity at a reaction temperature in a range from 180 to 400 and a reaction pressure in a range from 0.1 MPa to 15.0 MPa, the mass space velocity of dimethoxymethane in the feed gas is in a range from 0.05 h.sup.−1 to 10.0 h.sup.−1, and the volume percentage of dimethoxymethane in the feed gas is in a range from 0.1% to 95%.

The present invention provides a method for preparing acrylic acid and methyl acrylate. The method comprises passing the feed gas containing dimethoxymethane and carbon monoxide through a solid acid catalyst to generate acrylic acid and methyl acrylate with a high conversion rate and selectivity at a reaction temperature in a range from 180 to 400 and a reaction pressure in a range from 0.1 MPa to 15.0 MPa, the mass space velocity of dimethoxymethane in the feed gas is in a range from 0.05 h.sup.−1 to 10.0 h.sup.−1, and the volume percentage of dimethoxymethane in the feed gas is in a range from 0.1% to 95%.

It is provided a process of converting syngas resulting from the gasification of a carbonaceous material into acetic acid and acrylic acid comprising converting the syngas into methanol and separating the methanol into a first and second stream, carbonylation of the first stream of methanol producing methyl acetate, hydrolyzing the methyl acetate to obtain acetic acid, oxidizing the second stream of the methanol into formaldehyde in a gas phase reaction, and reacting by aldol condensation the formaldehyde and acetic acid to produce acrylic acid. Particularly, the first stream of methanol is dehydrated to produce dimethyl ether (DME) and the DME is further contacted with syngas under an iodide-free environment to produce the methyl acetate by carbonylation, and subsequently acetic acid using a reactive distillation column.

It is provided a process of converting syngas resulting from the gasification of a carbonaceous material into acetic acid and acrylic acid comprising converting the syngas into methanol and separating the methanol into a first and second stream, carbonylation of the first stream of methanol producing methyl acetate, hydrolyzing the methyl acetate to obtain acetic acid, oxidizing the second stream of the methanol into formaldehyde in a gas phase reaction, and reacting by aldol condensation the formaldehyde and acetic acid to produce acrylic acid. Particularly, the first stream of methanol is dehydrated to produce dimethyl ether (DME) and the DME is further contacted with syngas under an iodide-free environment to produce the methyl acetate by carbonylation, and subsequently acetic acid using a reactive distillation column.

The present disclosure is directed to microporous crystalline aluminosilicate structures with GME topologies having pores containing organic structure directing agents (OSDAs) comprising at least one piperidinium cation, the compositions useful for making these structures, and methods of using these structures. In some embodiments, the crystalline zeolite structures have a molar ratio of Si:Al that is greater than 3.5.

The present disclosure is directed to microporous crystalline aluminosilicate structures with GME topologies having pores containing organic structure directing agents (OSDAs) comprising at least one piperidinium cation, the compositions useful for making these structures, and methods of using these structures. In some embodiments, the crystalline zeolite structures have a molar ratio of Si:Al that is greater than 3.5.

The present disclosure is directed to microporous crystalline aluminosilicate structures with GME topologies having pores containing organic structure directing agents (OSDAs) comprising at least one piperidinium cation, the compositions useful for making these structures, and methods of using these structures. In some embodiments, the crystalline zeolite structures have a molar ratio of Si:Al that is greater than 3.5.

Provided are processes for monitoring and maintaining continuous carbonylation of epoxides or lactones. Processes include measuring parameters affecting the rate of the carbonylation reaction and adding supplemental replacement catalyst replacement components to maintain a constant rate of carbonylation.

Provided are processes for monitoring and maintaining continuous carbonylation of epoxides or lactones. Processes include measuring parameters affecting the rate of the carbonylation reaction and adding supplemental replacement catalyst replacement components to maintain a constant rate of carbonylation.

Provided are processes for monitoring and maintaining continuous carbonylation of epoxides or lactones. Processes include measuring parameters affecting the rate of the carbonylation reaction and adding supplemental replacement catalyst replacement components to maintain a constant rate of carbonylation.