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Primary Steam Reforming Catalyst Z428Q/Z429Q for Hydrogen and Ammonia Plants

group name: Primary Reforming Catalyst

Min Order: 1 ton

brand name: Syamcat Catalyst Manufacturer

model: SYAMCAT Z428Q/SYAMCAT Z429Q

Nearest port for product export: qingdao

Delivery clauses under the trade mode: FOB, CFR, CIF, EXW, FCA

Acceptable payment methods: T/T, L/C

update time: Fri, 04 Sep 2026 13:45:18 GMT

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Paramtents

Active component NiO ≥12 wt%
Color Black grey
Side crushing strength/(N.granula-1) ≥Z428Q >200 N/piece; Z429Q >300 N/piece

Packging & Delivery

Min Order1 ton

Briefing

SYAMCAT Z428Q/Z429Q nickel catalysts are designed for upper- and lower-tube loading in primary steam reformers for hydrogen and ammonia production.

Detailed

Product Overview

Primary Steam Reforming Catalyst Z428Q/Z429Q

SYAMCAT Z428Q and Z429Q are nickel-based catalysts designed for use in primary steam reformers. Z428Q is intended for upper-tube loading, while Z429Q is intended for lower-tube loading and may be considered for full-tube loading subject to process conditions. Catalyst selection should be based on feed composition, steam-to-carbon ratio, temperature profile and operating objectives.

Application Case

Application Case: Z428Q/Z429Q in a Hydrogen Production Unit

Project Background

SYAMCAT supplied the complete catalyst package for a hydrogen production unit in the Middle East. This product page focuses on the Z428Q and Z429Q primary reforming catalysts used in the project.

Catalyst Loading Configuration

Z428Q was loaded in the upper section of the primary reformer tubes, while Z429Q was loaded in the lower section. The two catalysts were selected and loaded according to the unit’s feedstock and operating conditions.

Operating Performance

Despite fluctuations in feedstock conditions, the primary reformer maintained stable operation. At the time of review, Z428Q and Z429Q had operated stably for six years. Based on the project assessment at that time, the expected total service life was approximately eight years.

Illustrative primary reformer tube loading configuration with SYAMCAT Z428Q in the upper section and Z429Q in the lower section

View the Full Integrated Catalyst Application Case →

The above results are based on this specific project. Actual catalyst performance depends on feed composition, operating conditions, loading configuration and plant operation.

Z428Q — Upper Section Catalyst

Loading position: Upper tube section

Pellet height: 8–10 mm

Crushing strength: >200 N/piece

Typical use: Paired loading with Z429Q

Z429Q — Lower Section Catalyst

Loading position: Lower tube section

Pellet height: 15–17 mm

Crushing strength: >300 N/piece

Typical use: Paired loading with Z428Q

Operating Conditions of Primary Steam Reforming Catalyst

Item	Hydrogen	Ammonia syngas	Methanol syngas	Oxo-syngas
Inlet temperature/℃	450-650	450-650	450-650	450-650
Outlet temperature/℃	700-900	650-850	800-980	800-980
Pressure/MPa	Atmospheric-6.0	Atmospheric-6.0	Atmospheric-6.0	Atmospheric-6.0
Steam/carbon ratio	≥2.7	≥2.7	≥2.5	≥1.5
Carbon space velocity/h-1	500-2000	500-2000	500-2000	500-2000
Feedstock	Natural gas, oilfield-associated gas, and other gaseous hydrocarbon feedstocks.

Specification of Primary Steam Reforming Catalyst

Parameter	Unit	SYAMCAT Z428Q	SYAMCAT Z429Q
Recommended loading position	——	Upper section	Lower section
Appearance	——	Four-hole cylinder	Four-hole cylinder
Height	mm	8–10	15–17
Outer diameter	mm	16–16.5	16–16.5
Hole diameter × number of holes	mm	Ø4 × 4 holes	Ø4 × 4 holes
Bulk density	g/cm³	0.90–1.05	0.90–1.05
Crushing strength	N/piece	>200	>300
NiO content	wt%	≥12	≥12

Application in Hydrogen Production

SYAMCAT Z428Q and Z429Q are used as a paired catalyst system in the primary steam reformer of a hydrogen production unit. Z428Q is loaded in the upper section of the reformer tubes, while Z429Q is loaded in the lower section.

The typical reference loading ratio is 1:1. The final loading configuration should be determined according to feed composition, steam-to-carbon ratio, operating pressure, tube temperature profile and production targets.

Performance Characteristics

Stable Reforming Activity

Good dispersion of the nickel active component supports stable reforming activity during long-term operation.

Effective Heat Transfer

The catalyst structure is designed to support effective heat transfer through the catalyst bed during primary steam reforming.

Mechanical Strength

The current TDS specifies crushing strength above 200 N/piece for Z428Q and above 300 N/piece for Z429Q.

Long-Term Project Performance

In the referenced hydrogen production project, Z428Q and Z429Q had operated stably for six years at the time of review.

Technical Support & Catalyst Recommendation

Selecting the appropriate Z428Q/Z429Q loading configuration requires an evaluation of the actual operating conditions. Please provide your feed composition, steam-to-carbon ratio, operating pressure, tube temperature profile, production capacity and current catalyst loading plan.

SYAMCAT’s technical team can assist with operating condition review, catalyst selection and loading configuration recommendations.

Send Your Operating Conditions →