Chiyoda Corporation

Tetsuro Matsumura

Takeshi Minami

Yoichi Umehara

Zhixiong You

Chikako Hashimoto

Atsuro Nagumo

Kenichi Imagawa

Ryuichi Kanai

Yasuo Hosono

Chunji Yin

A vinylpyridine resin for a catalyst support; a method for producing thereof; and a catalyst for carbonylation of methanol are disclosed. The vinylpyridine resin has: content of nitrogen derived from a pyridine group of 3.00% by mass or more and 8.00% by mass or less; degree of crosslinking of 35% by mole or more and 70% by mole or less; molar ratio C/N of carbon atoms to nitrogen atoms of 12.00 or more and 36.00 or less; total pore volume of 0.20 cc/g or more and 0.45 cc/g or less; specific surface area of 70.0 m/g or more and 280 m/g or less; average pore diameter of 5.0 nm or more and 25.0 nm or less; and proportion of a volume of pores having a pore diameter of 10 nm or more to a volume of the whole pores of 4.0% or more and 90.0% or less.

Vinylpyridine resin for catalyst supports, production method therefor, and catalyst for methanol carbonylation reaction

An aldehyde adsorbent that can adsorb and remove aldehyde from a carboxylic acid-containing liquid is provided. The aldehyde adsorbent is an aldehyde adsorbent for adsorbing aldehyde in a carboxylic acid-containing liquid containing aldehyde, including a cation exchange resin ion-exchanged with a polyvalent amine in 1 to 99% by mol of the total exchange capacity.

Aldehyde adsorbent, method for removing aldehyde, method for producing acetic acid, and method for regenerating aldehyde adsorbent

To provide a production method for suppressing the reduction in production rate of a carbonyl compound due to transferring a noble metal component into liquid phase. A method for producing a carbonyl compound, including: a reaction step of reacting a carbonylation raw material with CO in liquid phase including a solid catalyst having noble metal complex on a resin carrier containing quaternized nitrogen to produce a carbonyl compound; a distillation step of distilling a reaction product liquid to recover gas phase distillate including the carbonyl compound; and a circulation step of circulating a bottom product from the distillation to reaction step. After part of the bottom product contacts with an acidic cation-exchange resin to remove nitrogen compound, liquid having higher moisture concentration than the bottom product contacts with the resin to extract noble metal complex captured by oligomer adsorbing the resin, and the complex is returned to the reaction step.

Method for producing carbonyl compound

According to a method for producing acetic acid by carbonylation of methanol characterized in that an acid having an acid dissociation constant (pK) smaller than the constant of acetic acid is allowed to be present in the reaction system, acetic acid can be produced by the reaction of methanol and carbon monoxide in a reaction liquid in the presence of a solid catalyst containing rhodium and alkyl iodide, to achieve an enhanced reaction rate of carbonylation of methanol in producing acetic acid in the region at a high carbonylation degree (Ca&#x3e;0.8 mol/mol) for more efficient production of acetic acid.

Method of accelerating methanol carbonylation

A catalyst for manufacturing synthesis gas has a carrier and a Group VIII metal carried by the carrier. The carrier contains a first ingredient, a second ingredient and a third ingredient. The first ingredient is an oxide of at least an alkaline earth metal selected from the group of magnesium, calcium, strontium and barium. The second ingredient is an oxide of at least an element selected from the group of scandium, yttrium and lanthanoids. The third ingredient is zirconia or a substance containing zirconia as principal ingredient and has a solid electrolytic property. The carrier may be formed by forming an overcoat film on a substrate by coating. Then, the overcoat film contains the above three ingredients. A catalyst according to the invention can remarkably reduce the dimensions of the reaction facility and improve the energy efficiency of the facility.

Growing community of inventors

Yokohama, Japan

Tetsuro Matsumura